mirror of
https://github.com/JHUAPL/em-overview.git
synced 2026-01-09 20:47:55 -05:00
Initial add - documentation only
Includes initial readme, contributing guidelines, and code of conduct Two issue templates: bug report and feature request Few images
This commit is contained in:
Andrew J. Weinert
63
.github/ISSUE_TEMPLATE/bug_report.md
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---
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name: Bug report
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about: Create a report to help us improve
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title: "[BUG]"
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labels: bug
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assignees: ''
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||||
|
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---
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Read the instructions and fill out your responses at the bottom.
|
||||
|
||||
## Instructions
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||||
|
||||
### Description
|
||||
A clear and concise description of what the bug is.
|
||||
|
||||
### Reproducibility
|
||||
Describe the exact steps which reproduce the problem in as many details as possible. For example, start by explaining how you started the computing environment or which command exactly you used in the terminal. When listing steps, don't just say what you did, but explain how you did it.
|
||||
|
||||
Steps to reproduce the behavior:
|
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1. Go to '...'
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2. Click on '....'
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3. Scroll down to '....'
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4. See error
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### Expectation
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||||
A clear and concise description of what you expected to happen.
|
||||
|
||||
### Recency
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Did the problem start happening recently (e.g. after updating to a new version) or was this always a problem?
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|
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### Files
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If the problem is related to working with files (e.g. opening and editing files), does the problem happen for all files and projects or only some? Does the problem happen only when working with local or remote files (e.g. on network drives), with files of a specific type (e.g. only JavaScript or Python files), with large files or files with very long lines, or with files in a specific encoding? Is there anything else special about the files you are using?
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|
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### Environment:
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- OS: [e.g. Windows 10, Ubuntu 18.04]
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- Programming language and version: [e.g. MATLAB 2019a, Julia 1.1.1]
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- Computing environment: [e.g. MATLAB, VS Code]
|
||||
- Are you running in a virtual machine" [e.g. yes, no]
|
||||
|
||||
### Screenshots
|
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Include screenshots and animated GIFs which show you following the described steps and clearly demonstrate the problem. You can use this [tool](https://www.cockos.com/licecap/) to record GIFs on macOS and Windows, and this [tool](https://github.com/colinkeenan/silentcast) or this [tool](https://github.com/GNOME/byzanz) on Linux.
|
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|
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### Additional context
|
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Add any other context about the problem here.
|
||||
|
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## FILL ME OUT
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|
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### Description
|
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|
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### Reproducibility
|
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|
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### Expectation
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|
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### Recency
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|
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### Files
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|
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### Environment
|
||||
|
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### Screenshots
|
||||
|
||||
### Additional
|
||||
33
.github/ISSUE_TEMPLATE/feature_request.md
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.github/ISSUE_TEMPLATE/feature_request.md
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---
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name: Feature request
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||||
about: Suggest an idea for this project
|
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title: "[ENHANCEMENT]"
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labels: enhancement
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assignees: ''
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||||
|
||||
---
|
||||
|
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## Instructions
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Read the instructions and fill out your responses at the bottom.
|
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|
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### Relation
|
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Is your feature request related to a problem? Please describe. Please provide a clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
|
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|
||||
### Description
|
||||
A clear and concise description of what you want to happen.
|
||||
|
||||
### Alternatives
|
||||
A clear and concise description of any alternative solutions or features you've considered.
|
||||
|
||||
### Additional context
|
||||
Add any other context or screenshots about the feature request here.
|
||||
|
||||
## FILL ME OUT
|
||||
|
||||
### Relation
|
||||
|
||||
### Description
|
||||
|
||||
### Alternatives
|
||||
|
||||
### Additional
|
||||
19
.gitignore
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.gitignore
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*.tmp
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# Word temporary
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~$*.doc*
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# Word Auto Backup File
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Backup of *.doc*
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# Excel temporary
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~$*.xls*
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||||
|
||||
# Excel Backup File
|
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*.xlk
|
||||
|
||||
# PowerPoint temporary
|
||||
~$*.ppt*
|
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|
||||
# Visio autosave temporary files
|
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*.~vsd*
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86
CODE_OF_CONDUCT.md
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CODE_OF_CONDUCT.md
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# Contributor Covenant Code of Conduct
|
||||
|
||||
## Our Pledge
|
||||
|
||||
In the interest of fostering an open and welcoming environment, we as
|
||||
contributors and maintainers pledge to making participation in our project and
|
||||
our community a harassment-free experience for everyone, regardless of age, body
|
||||
size, disability, ethnicity, sex characteristics, gender identity and expression,
|
||||
level of experience, education, socio-economic status, nationality, personal
|
||||
appearance, race, religion, or sexual identity and orientation.
|
||||
|
||||
## Our Standards
|
||||
|
||||
Examples of behavior that contributes to creating a positive environment
|
||||
include:
|
||||
|
||||
* Using welcoming and inclusive language
|
||||
* Being respectful of differing viewpoints and experiences
|
||||
* Gracefully accepting constructive criticism
|
||||
* Focusing on what is best for the community
|
||||
* Showing empathy towards other community members
|
||||
|
||||
Examples of unacceptable behavior by participants include:
|
||||
|
||||
* The use of sexualized language or imagery and unwelcome sexual attention or
|
||||
advances
|
||||
* Trolling, insulting/derogatory comments, and personal or political attacks
|
||||
* Public or private harassment
|
||||
* Publishing others' private information, such as a physical or electronic
|
||||
address, without explicit permission
|
||||
* Other conduct which could reasonably be considered inappropriate in a
|
||||
professional setting
|
||||
|
||||
## Our Responsibilities
|
||||
|
||||
Project maintainers are responsible for clarifying the standards of acceptable
|
||||
behavior and are expected to take appropriate and fair corrective action in
|
||||
response to any instances of unacceptable behavior.
|
||||
|
||||
Project maintainers have the right and responsibility to remove, edit, or
|
||||
reject comments, commits, code, wiki edits, issues, and other contributions
|
||||
that are not aligned to this Code of Conduct, or to ban temporarily or
|
||||
permanently any contributor for other behaviors that they deem inappropriate,
|
||||
threatening, offensive, or harmful.
|
||||
|
||||
## Scope
|
||||
|
||||
This Code of Conduct applies both within project spaces and in public spaces
|
||||
when an individual is representing the project or its community. Examples of
|
||||
representing a project or community include using an official project e-mail
|
||||
address, posting via an official social media account, or acting as an appointed
|
||||
representative at an online or offline event. Representation of a project may be
|
||||
further defined and clarified by project maintainers.
|
||||
|
||||
## Enforcement
|
||||
|
||||
Instances of abusive, harassing, or otherwise unacceptable behavior may be
|
||||
reported by contacting the project team at encounter-model-ml-admin@mit.edu. All
|
||||
complaints will be reviewed and investigated and will result in a response that
|
||||
is deemed necessary and appropriate to the circumstances. The project team is
|
||||
obligated to maintain confidentiality with regard to the reporter of an incident.
|
||||
Further details of specific enforcement policies may be posted separately.
|
||||
|
||||
Project maintainers who do not follow or enforce the Code of Conduct in good
|
||||
faith may face temporary or permanent repercussions as determined by other
|
||||
members of the project's leadership.
|
||||
|
||||
## Attribution
|
||||
|
||||
This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
|
||||
available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
|
||||
|
||||
[homepage]: https://www.contributor-covenant.org
|
||||
|
||||
For answers to common questions about this code of conduct, see
|
||||
https://www.contributor-covenant.org/faq
|
||||
|
||||
## Distribution Statement
|
||||
|
||||
DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.
|
||||
|
||||
This material is based upon work supported by the Federal Aviation Administration under Air Force Contract No. FA8702-15-D-0001.
|
||||
|
||||
Any opinions, findings, conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Federal Aviation Administration.
|
||||
|
||||
This document is derived from work done for the FAA (and possibly others), it is not the direct product of work done for the FAA. The information provided herein may include content supplied by third parties. Although the data and information contained herein has been produced or processed from sources believed to be reliable, the Federal Aviation Administration makes no warranty, expressed or implied, regarding the accuracy, adequacy, completeness, legality, reliability or usefulness of any information, conclusions or recommendations provided herein. Distribution of the information contained herein does not constitute an endorsement or warranty of the data or information provided herein by the Federal Aviation Administration or the U.S. Department of Transportation. Neither the Federal Aviation Administration nor the U.S. Department of Transportation shall be held liable for any improper or incorrect use of the information contained herein and assumes no responsibility for anyone’s use of the information. The Federal Aviation Administration and U.S. Department of Transportation shall not be liable for any claim for any loss, harm, or other damages arising from access to or use of data or information, including without limitation any direct, indirect, incidental, exemplary, special or consequential damages, even if advised of the possibility of such damages. The Federal Aviation Administration shall not be liable to anyone for any decision made or action taken, or not taken, in reliance on the information contained herein.
|
||||
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CONTRIBUTING.md
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CONTRIBUTING.md
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# How to contribute
|
||||
|
||||
We encourage the use of the [GitHub Issues](https://guides.github.com/features/issues/) for bug report, new feature requests, etc. To streamline reporting, issues will only be enabled for the [em-overview](https://github.com/airspace-encounter-models/em-overview/) repository.
|
||||
|
||||
Due to the encounter models routine use in aviation research, we like to minimize the risk of inadvertent bugs or software challenges to maintain the encounter models as a trusted benchmark. To encourage traceability, development should occur via [forking](https://guides.github.com/activities/forking/).
|
||||
|
||||
- [How to contribute](#how-to-contribute)
|
||||
- [Code of Conduct](#code-of-conduct)
|
||||
- [Roadmap](#roadmap)
|
||||
- [Workflow](#workflow)
|
||||
- [Bugs](#bugs)
|
||||
- [Reporting Bugs](#reporting-bugs)
|
||||
- [Patching Bugs](#patching-bugs)
|
||||
- [Cosmetic Patch](#cosmetic-patch)
|
||||
- [Enhancements and New Features](#enhancements-and-new-features)
|
||||
- [Requesting features](#requesting-features)
|
||||
- [Developing features](#developing-features)
|
||||
- [Requesting documentation](#requesting-documentation)
|
||||
- [Convention Guide](#convention-guide)
|
||||
- [Documentation](#documentation)
|
||||
- [Variable Names](#variable-names)
|
||||
- [Units](#units)
|
||||
- [Colors](#colors)
|
||||
- [Questions about the source code](#questions-about-the-source-code)
|
||||
- [Distribution Statement](#distribution-statement)
|
||||
|
||||
## Code of Conduct
|
||||
|
||||
This project and everyone participating in it is governed by the [Code of Conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to [encounter-model-ml-admin@mit.edu](mailto:encounter-model-ml-admin@mit.edu).
|
||||
|
||||
## Roadmap
|
||||
|
||||
No public technology roadmap for development is available yet. As the encounter models transition to a more community-focused model, this may change.
|
||||
|
||||
## Workflow
|
||||
|
||||
A variety of organizations from academia, federal agencies, federal funded research and development centers (FFRDC), and industry have supported encounter model development. Each organization has different policies on release review and procedures to disseminate content. Organizations may also have their own enterprise self-hosted version control systems.
|
||||
|
||||
We recommend the following workflow that perseveres content part of the [airspace-encounter-models](https://github.com/airspace-encounter-models) organization as a "gold benchmark" while promoting a traceable workflow for contributors.
|
||||
|
||||
|
||||
|
||||
We'll use an illustrative example with MIT Lincoln Laboratory, a FFRDC with strict release review policies, with their public [mit-ll](https://github.com/mit-ll) organization and a private enterprise system to explain this workflow. For organizations that permit public development, ignore steps with the enterprise instance.
|
||||
|
||||
1. The repository required for development is identified in [airspace-encounter-models](https://github.com/airspace-encounter-models)
|
||||
2. This repository is forked by the [mit-ll](https://github.com/mit-ll) organization.
|
||||
3. The new repository on [mit-ll](https://github.com/mit-ll) organization is cloned by the enterprise self-hosted GitHub. Note you can't fork from public to private, see this Stack Overflow question for mitigations: [Is it possible to fork a public GitHub repo into an enterprise repository?](https://stackoverflow.com/q/29952033)
|
||||
- Prior to any changes, there are now three instances of the repository: a private enterprise clone (airspace-encounter-models-internal), a public fork ([mit-ll](https://github.com/mit-ll)), and the original ([airspace-encounter-models](https://github.com/airspace-encounter-models)).
|
||||
4. Development is conducted using branches on the enterprise clone.
|
||||
5. When development is over, the clone will be released review according to internal policies.
|
||||
6. Once the clone is approved for public release, changes will be pushed to the public fork.
|
||||
7. A pull request will be opened to contribute back to the original.
|
||||
8. The encounter model administrators will review the pull request and either accept or reject it.
|
||||
|
||||
## Bugs
|
||||
|
||||
According to [Wikipedia](https://en.wikipedia.org/wiki/Software_bug), a software bug is a:
|
||||
> A software bug is an error, flaw, failure or fault in a computer program or system that causes it to produce an incorrect or unexpected result, or to behave in unintended ways.
|
||||
|
||||
### Reporting Bugs
|
||||
|
||||
- **Ensure the bug was not already reported** by searching on GitHub under [Issues](https://github.com/airspace-encounter-models/em-overview/issues).
|
||||
- If you're unable to find an open issue addressing the problem, [open a new one](https://github.com/airspace-encounter-models/em-overview/issues) using the [bug report](.github/ISSUE_TEMPLATE/bug_report.md) template. Be sure to include a title, a clear description, and as much relevant information as possible.
|
||||
- Confirm that the bug report template assigned a BUG label to the issue.
|
||||
|
||||
### Patching Bugs
|
||||
|
||||
- Open a new GitHub pull request with the patch.
|
||||
- Ensure the pull request description clearly describes the problem and solution. Include the relevant issue number if applicable.
|
||||
- Before submitting, please read the [convention guide](#convention-guide) to know more about coding conventions and recommended units.
|
||||
|
||||
### Cosmetic Patch
|
||||
|
||||
Changes that are cosmetic in nature, such as fixing whitespaces characters or formatting code, and do not add anything substantial to the stability, functionality, or testability will generally not be accepted. Our rational aligns with those expressed by the [Ruby on Rails team](https://github.com/rails/rails/pull/13771#issuecomment-32746700).
|
||||
|
||||
## Enhancements and New Features
|
||||
|
||||
According to [Wikipedia](https://en.wikipedia.org/wiki/Software_feature) and IEEE 829, a software feature is a:
|
||||
> A distinguishing characteristic of a software item (e.g., performance, portability, or functionality.
|
||||
|
||||
### Requesting features
|
||||
|
||||
- **Ensure the feature was not already requested** by searching on GitHub under [Issues](https://github.com/airspace-encounter-models/em-overview/issues).
|
||||
- If you're unable to find an open issue for the desired feature, [open a new one](https://github.com/airspace-encounter-models/em-overview/issues) using the [feature request](.github/ISSUE_TEMPLATE/feature_request.md) template. Be sure to include a title, a clear description, and as much relevant information as possible.
|
||||
- Confirm that the feature request template assigned an ENHANCEMENT label to the issue.
|
||||
|
||||
### Developing features
|
||||
|
||||
- Fork the repository associated with the feature request and develop the desired capabilities
|
||||
- Open a new GitHub pull request with the enhancement
|
||||
- Ensure the pull request description clearly addresses the feature request. Include the relevant issue number. Unlike bugs, enhancements without a traceable issue number will not have the pull request accepted.
|
||||
- Before submitting, please read the [convention guide](#convention-guide) to know more about coding conventions and recommended units. Some documentation and code commenting is required for the pull request to be accepted too.
|
||||
|
||||
### Requesting documentation
|
||||
|
||||
Requesting more or a clarification of documentation is a valid feature request. Note as a community development project, it would be nearly impossible to enforce authors of a specific piece of code to respond to the documentation request.
|
||||
|
||||
## Convention Guide
|
||||
|
||||
### Documentation
|
||||
|
||||
**Pull requests with no documentation will be rejected.** We believe documentation is good and integral to the success of a community software project. However, we recognize that everyone has different expectations and opinions on code documentation. [Self-documenting code](https://en.wikipedia.org/wiki/Self-documenting_code) should be sufficient in most cases but the use of inline comments to organize blocks of code are encouraged.
|
||||
|
||||
### Variable Names
|
||||
|
||||
- When applicable, variable names should include units, such as `speed_kt` or `el_ft_msl`.
|
||||
- Delimiter-separated words should use an underscore, `_`
|
||||
- Variable names should be short yet meaningful. The choice of a variable name should be mnemonic — that is, designed to indicate to the casual observer the intent of its use. One-character variable names should be avoided except for temporary "throwaway" variables. Common names for temporary variables are `i`, `j`, `k`.
|
||||
|
||||
### Units
|
||||
|
||||
We employ units commonly used by the United States aviation community. We strongly recommend converting to these units as soon as possible when reading in data. We discourage converting to a different units within stand alone functions or as part of intermediate code. **Excess use of non U.S. aviation units may prompt a rejection of a pull request.**
|
||||
|
||||
For more information, refer to Aviation Stackexchange: "[Why doesn't the aviation industry use SI units?](https://aviation.stackexchange.com/q/2572)" and "[What is the measurement system used in the aviation industry?](https://aviation.stackexchange.com/q/2566)"
|
||||
|
||||
Dimension | Unit
|
||||
------------ | -------------
|
||||
time | [second (s)](https://en.wikipedia.org/wiki/Second)
|
||||
length - altitude & elevation | [foot (ft)](https://en.wikipedia.org/wiki/Foot_(unit))
|
||||
length - longitudinal and lateral distance | [foot (ft)](https://en.wikipedia.org/wiki/Foot_(unit)) or [nautical mile (nm)](https://en.wikipedia.org/wiki/Nautical_mile)
|
||||
speed - vertical rate | [foot per second (fps)](https://en.wikipedia.org/wiki/Foot_per_second)
|
||||
speed - airspeed or ground speed | [knot (kts)](https://en.wikipedia.org/wiki/Knot_(unit))
|
||||
plane angle - course, heading, roll, pitch, yaw | [degree (deg)](https://en.wikipedia.org/wiki/Degree_(angle))
|
||||
latitude & longitude coordinates | [decimal degrees (DD)](https://en.wikipedia.org/wiki/Decimal_degrees)
|
||||
world geodetic system | [WGS 84 (EPSG:4326)](https://epsg.io/4326)
|
||||
mass | [pound mass (lb)](https://en.wikipedia.org/wiki/Pound_(mass))
|
||||
force | [pound force (lbf)](https://en.wikipedia.org/wiki/Pound_(force))
|
||||
temperature | [degree Fahrenheit (°F)](https://en.wikipedia.org/wiki/Fahrenheit)
|
||||
|
||||
### Colors
|
||||
|
||||
To promote accessibility and align with graphic best practices, we recommend a color guidelines proposed by B. Wong that is perceived as reasonably distinct by both normal and color blind individuals. Selecting a widely perceived color scheme is particularly important for peer reviews, as B. Wong notes:
|
||||
|
||||
> If a submitted manuscript happens to go to three male reviewers of Northern European descent, the chance that at least one will be color blind is 22 percent...The palette of eight colors shown [below] has good overall variability and can be differentiated by individuals with red-green color blindness.
|
||||
|
||||
|
||||
|
||||
<details> <summary> B. Wong, “Points of view: Color blindness,” Nature Methods, vol. 8, pp. 441–441, May 2011.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@article{wongPointsViewColor2011,
|
||||
title = {Points of view: {Color} blindness},
|
||||
volume = {8},
|
||||
copyright = {2011 Nature Publishing Group},
|
||||
issn = {1548-7105},
|
||||
shorttitle = {Points of view},
|
||||
url = {https://www.nature.com/articles/nmeth.1618},
|
||||
doi = {10.1038/nmeth.1618},
|
||||
language = {en},
|
||||
urldate = {2019-08-27},
|
||||
journal = {Nature Methods},
|
||||
author = {Wong, Bang},
|
||||
month = may,
|
||||
year = {2011},
|
||||
pages = {441--441},
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
## Questions about the source code
|
||||
|
||||
Please contact the administrators at [encounter-model-ml-admin@mit.edu](mailto:encounter-model-ml-admin@mit.edu). As the encounter models transition to a more community driven effort, a separate mailing list for code discussion may be created.
|
||||
|
||||
## Distribution Statement
|
||||
|
||||
DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.
|
||||
|
||||
This material is based upon work supported by the Federal Aviation Administration under Air Force Contract No. FA8702-15-D-0001.
|
||||
|
||||
Any opinions, findings, conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Federal Aviation Administration.
|
||||
|
||||
This document is derived from work done for the FAA (and possibly others), it is not the direct product of work done for the FAA. The information provided herein may include content supplied by third parties. Although the data and information contained herein has been produced or processed from sources believed to be reliable, the Federal Aviation Administration makes no warranty, expressed or implied, regarding the accuracy, adequacy, completeness, legality, reliability or usefulness of any information, conclusions or recommendations provided herein. Distribution of the information contained herein does not constitute an endorsement or warranty of the data or information provided herein by the Federal Aviation Administration or the U.S. Department of Transportation. Neither the Federal Aviation Administration nor the U.S. Department of Transportation shall be held liable for any improper or incorrect use of the information contained herein and assumes no responsibility for anyone’s use of the information. The Federal Aviation Administration and U.S. Department of Transportation shall not be liable for any claim for any loss, harm, or other damages arising from access to or use of data or information, including without limitation any direct, indirect, incidental, exemplary, special or consequential damages, even if advised of the possibility of such damages. The Federal Aviation Administration shall not be liable to anyone for any decision made or action taken, or not taken, in reliance on the information contained herein.
|
||||
669
README.md
Normal file
669
README.md
Normal file
@@ -0,0 +1,669 @@
|
||||
# Airspace Encounter Models Overview
|
||||
|
||||
For many aviation safety studies, aircraft behavior is represented using encounter models, which are statistical models of how aircraft behave during close encounters. They are used to provide a realistic representation of the range of encounter flight dynamics where an aircraft collision avoidance system would be likely to alert. Encounter models represent the encounter geometry, but also the aircraft behavior (accelerations) during the course of the encounter. Encounter models have been developed for many different manned operational contexts, but there are new considerations for unmanned aircraft operations including the lower operating altitudes and interactions with service providers and other users.
|
||||
|
||||
This GitHub organization and associated repositories are intended to eventually supersede the legacy [MIT Lincoln Laboratory hosted encounter model website](https://topa.atc.ll.mit.edu/lldata/) and align encounter model development with modern community driven software practices. As of 2019, this original MIT Lincoln Laboratory-hosted website has not been deprecated by this GitHub organization yet. Not all encounter model content is available on GitHub.
|
||||
|
||||
- [Airspace Encounter Models Overview](#airspace-encounter-models-overview)
|
||||
- [Point of Contact](#point-of-contact)
|
||||
- [Nomenclature](#nomenclature)
|
||||
- [Sponsors](#sponsors)
|
||||
- [UAS ExCom Science and Research Panel](#uas-excom-science-and-research-panel)
|
||||
- [Encounter Model Requirements](#encounter-model-requirements)
|
||||
- [Documentation](#documentation)
|
||||
- [Introductory](#introductory)
|
||||
- [Manned Correlated Model](#manned-correlated-model)
|
||||
- [Manned Due Regard](#manned-due-regard)
|
||||
- [Manned Helicopter Air Ambulance Model](#manned-helicopter-air-ambulance-model)
|
||||
- [Manned Littoral Model](#manned-littoral-model)
|
||||
- [Manned Uncorrelated Model](#manned-uncorrelated-model)
|
||||
- [Manned Unconventional Model](#manned-unconventional-model)
|
||||
- [Unmanned Uncorrelated Model](#unmanned-uncorrelated-model)
|
||||
- [Encounter Categories](#encounter-categories)
|
||||
- [Manned vs Manned](#manned-vs-manned)
|
||||
- [Unmanned vs Manned](#unmanned-vs-manned)
|
||||
- [Unmanned vs Unmanned](#unmanned-vs-unmanned)
|
||||
- [Download](#download)
|
||||
- [Terminology](#terminology)
|
||||
- [Trajectories](#trajectories)
|
||||
- [Encounter Sets](#encounter-sets)
|
||||
- [Select Applications and Use Cases](#select-applications-and-use-cases)
|
||||
- [Historical Perspective](#historical-perspective)
|
||||
- [Well Clear for UAS](#well-clear-for-uas)
|
||||
- [Evaluation of TCAS II Version 7.1](#evaluation-of-tcas-ii-version-71)
|
||||
- [Distribution Statement](#distribution-statement)
|
||||
|
||||
## Point of Contact
|
||||
|
||||
We encourage the use of the [GitHub Issues](https://guides.github.com/features/issues/) but when email is required, please contact the administrators at [encounter-model-ml-admin@mit.edu](mailto:encounter-model-ml-admin@mit.edu). As the encounter models transition to a more community driven effort, a separate mailing list for code discussion may be created.
|
||||
|
||||
## Nomenclature
|
||||
|
||||
Acronym | Phrase
|
||||
:--- | :---
|
||||
ADS-B | [Automatic dependent surveillance – broadcast](https://en.wikipedia.org/wiki/Automatic_dependent_surveillance_%E2%80%93_broadcast)
|
||||
ATC | [air traffic control](https://en.wikipedia.org/wiki/Air_traffic_control)
|
||||
DAA | detect and avoid
|
||||
IFR | [instrument flight rules](https://en.wikipedia.org/wiki/Instrument_flight_rules)
|
||||
SARP | science and research panel
|
||||
sUAS | small unmanned aerial system
|
||||
TCAS | [traffic collision avoidance system](https://en.wikipedia.org/wiki/Traffic_collision_avoidance_system)
|
||||
UAS | [unmanned aerial system](https://en.wikipedia.org/wiki/Unmanned_aerial_vehicle)
|
||||
UTM | [UAS traffic management](https://en.wikipedia.org/wiki/Unmanned_aircraft_system_traffic_management)
|
||||
VFR | [visual flight rules](https://en.wikipedia.org/wiki/Visual_flight_rules)
|
||||
|
||||
## Sponsors
|
||||
|
||||
Development has been funded by a variety of sponsors, primarily U.S. federal agencies, to support a many different aviation safety efforts. This section is reserved for overviews of key funding agencies and the development they supported. It is the sponsor's discretion to provide content for this section.
|
||||
|
||||
### UAS ExCom Science and Research Panel
|
||||
|
||||
Since 2015, encounter model development has been funded by the UAS Executive Committee (ExCom) SARP, an organization chartered under the ExCom Senior Steering Group (SSG). The SARP consists of senior managers in eight U.S. Government federal agencies – DoD, FAA, NASA, DHS, DOI, DOC, DOJ, and DOE. It was founded in 2011 by the Office of the Under Secretary of Defense for Acquisition, Technology, and Logistics for Unmanned Warfare; in 2013, it was realigned and expanded under the UAS ExCom SSG. The SARP is led by a U.S. Government senior research advisor from the FAA and two co-chairs appointed by the SSG.
|
||||
|
||||
The SARP’s process involves collaboratively identifying key research needs, gaps, and overlaps through maintenance of a prioritized “gap” list. The SARP has four primary goals:
|
||||
|
||||
- To focus the scientific and technical capabilities of a broad Federal technical community upon key UAS integration science and research initiatives,
|
||||
- To provide insight as to how these initiatives may align with commercial and academic science and research efforts to avoid duplication and reduce cost,
|
||||
- To identify and validate (through the ExCom) known research gaps that impact the airspace integration of UAS and to review available published studies, and
|
||||
- To coordinate and lead interagency resources and expertise to develop specific solutions and/or recommendations that address the ExCom’s highest-priority research gaps for UAS airspace integration.
|
||||
|
||||
As of 2015, the SARP addressed primary gaps of sUAS versus manned aircraft well clear, UAS risk to people on the ground, and barriers to multiple UAS operations. To support the SARP recommendations to the ExCom SSG, encounter models of unmanned aircraft behavior and low altitude airspace were required and developed.
|
||||
|
||||
## Encounter Model Requirements
|
||||
|
||||
With the exception of the [uncorrelated UAS model](#unmanned-uncorrelated-model), each encounter model of manned aircraft is a Bayesian Network, a representation of a multivariate probability distribution as a directed acyclic graph and trained using aircraft operational data derived from radar or other sensing system flight track data. All these models were originally developed by MIT Lincoln Laboratory.
|
||||
|
||||
To enable assessment of aviation safety systems such as collision avoidance or detect and avoid systems, these models are designed with the following requirements:
|
||||
|
||||
- Be built using aircraft operational data;
|
||||
- Have dependence on geographic region, airspace class, and altitude layer;
|
||||
- Have a representative time period for different evaluations;
|
||||
- Reflect realistic aircraft flight dynamics;
|
||||
- Realistically capture relative aircraft geometry; and
|
||||
- Enable fast-time simulation.
|
||||
|
||||
## Documentation
|
||||
|
||||
The encounter models are described in the brief introductory material that follows as well as in comprehensive technical reports.
|
||||
|
||||
Generally speaking, there are two types of encounter model: correlated and uncorrelated, where correlation is defined as a statistical dependence between conflicting aircraft due to factors before before a collision avoidance system like TCAS or a UAS DAA system acts, modeling at least 60 seconds prior to a closet point of approach. If a sufficient correlation exists, then it must be modeled. One of the main causes of correlation in encounters that must be accounted for in the models is air traffic control; however, air traffic control is not directly applicable to all UAS operational concepts. It is possible that NASA prototype UTM separation services may induce a similar correlation, provided the conflict is made aware to UTM. However as of August 2019, since there are currently no accepted or operational UTM services, encounters with sUAS are assumed to be uncorrelated.
|
||||
|
||||
Citations are listed in descending chronological order, which the newest entries listed first. Clicking the arrow next the citation will display the Bibtex entry for each citation. Each Bibtex entry includes a URL to access the citation. All citations can also be found in the Zotero group, [airspace-encounter-model](https://www.zotero.org/groups/2359172/airspace-encounter-models/items).
|
||||
|
||||
### Introductory
|
||||
|
||||
<details> <summary> A. Weinert, N. Underhill, and A. Wicks, “Developing a Low Altitude Manned Encounter Model Using ADS-B Observations,” in 2019 IEEE Aerospace Conference, Big Sky, MT, 2019.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@inproceedings{weinertDevelopingLowAltitude2019,
|
||||
title = {Developing a {Low} {Altitude} {Manned} {Encounter} {Model} {Using} {ADS}-{B} {Observations}},
|
||||
url = {https://doi.org/10.1109/AERO.2019.8741848},
|
||||
doi = {10.1109/AERO.2019.8741848},
|
||||
address = {Big Sky, MT},
|
||||
language = {en},
|
||||
booktitle = {2019 {IEEE} {Aerospace} {Conference}},
|
||||
author = {Weinert, Andrew and Underhill, Ngaire and Wicks, Ashley},
|
||||
month = mar,
|
||||
year = {2019},
|
||||
pages = {1--8}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> M. J. Kochenderfer, M. W. M. Edwards, L. P. Espindle, J. K. Kuchar, and J. D. Griffith, “Airspace Encounter Models for Estimating Collision Risk,” Journal of Guidance, Control, and Dynamics, vol. 33, no. 2, pp. 487–499, Apr. 2010.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@article{kochenderferAirspaceEncounterModels2010,
|
||||
title = {Airspace {Encounter} {Models} for {Estimating} {Collision} {Risk}},
|
||||
url = {https://doi.org/10.2514/1.44867},
|
||||
volume = {33},
|
||||
doi = {10.2514/1.44867},
|
||||
number = {2},
|
||||
journal = {Journal of Guidance, Control, and Dynamics},
|
||||
author = {Kochenderfer, Mykel J. and Edwards, Matthew W. M. and Espindle, Leo P. and Kuchar, James K. and Griffith, J. Daniel},
|
||||
month = apr,
|
||||
year = {2010},
|
||||
pages = {487--499}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> M. J. Kochendedrfer, L. P. Espindle, J. K. Kuchar, and J. D. Griffith, “A Comprehensive Aircraft Encounter Model of the National Airspace System,” Lincoln Laboratory Journal, vol. 17, no. 2, pp. 41–53, 2008.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@article{kochendedrferComprehensiveAircraftEncounter2008,
|
||||
title = {A {Comprehensive} {Aircraft} {Encounter} {Model} of the {National} {Airspace} {System}},
|
||||
volume = {17},
|
||||
url = {https://pdfs.semanticscholar.org/4086/9e6358bded8c07a7e5480facee4223fa0a29.pdf},
|
||||
language = {en},
|
||||
number = {2},
|
||||
journal = {Lincoln Laboratory Journal},
|
||||
author = {Kochendedrfer, Mykel J. and Espindle, Leo P. and Kuchar, James K. and Griffith, J. Daniel},
|
||||
year = {2008},
|
||||
pages = {41--53}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Manned Correlated Model
|
||||
|
||||
<details> <summary> N. Underhill, E. Harkleroad, R. Guendel, D. Maki, and M. Edwards, “Correlated Encounter Model for Cooperative Aircraft in the National Airspace System; Version 2.0,” Massachusetts Institute Technology Lincoln Laboratory Lexington United States, May 2018.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{underhillCorrelatedEncounterModel2018,
|
||||
title = {Correlated {Encounter} {Model} for {Cooperative} {Aircraft} in the {National} {Airspace} {System}; {Version} 2.0},
|
||||
url = {https://apps.dtic.mil/docs/citations/AD1051496},
|
||||
language = {en},
|
||||
urldate = {2019-01-16},
|
||||
institution = {Massachusetts Institute Technology Lincoln Laboratory Lexington United States},
|
||||
author = {Underhill, N. and Harkleroad, E. and Guendel, R. and Maki, D. and Edwards, M.},
|
||||
month = may,
|
||||
year = {2018}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> M. J. Kochenderfer, L. P. Espindle, J. K. Kuchar, and J. D. Griffith, “Correlated Encounter Model for Cooperative Aircraft in the National Airspace System,” Massachusetts Institute of Technology, Lincoln Laboratory, Project Report ATC-344, 2008.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{kochenderferCorrelatedEncounterModel2008,
|
||||
title = {Correlated {Encounter} {Model} for {Cooperative} {Aircraft} in the {National} {Airspace} {System}},
|
||||
url = {https://www.ll.mit.edu/r-d/publications/correlated-encounter-model-cooperative-aircraft-national-airspace-system-version},
|
||||
type = {Project {Report}},
|
||||
number = {ATC-344},
|
||||
institution = {Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Kochenderfer, M. J. and Espindle, Leo P. and Kuchar, James K. and Griffith, J. D.},
|
||||
year = {2008}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Manned Due Regard
|
||||
|
||||
<details> <summary> J. D. Griffith, M. W. Edwards, R. M. Miraflor, and A. J. Weinert, “Due Regard Encounter Model Version 1.0,” Massachusetts Institute of Technology, Lincoln Laboratory, Lexington, MA, Project Report ATC-397, Aug. 2013.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{griffithDueRegardEncounter2013,
|
||||
title = {Due {Regard} {Encounter} {Model} {Version} 1.0},
|
||||
address = {Lexington, MA},
|
||||
type = {Project {Report}},
|
||||
number = {ATC-397},
|
||||
institution = {Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Griffith, John D. and Edwards, Matthew W. and Miraflor, Raymond M. and Weinert, Andrew J.},
|
||||
month = aug,
|
||||
year = {2013},
|
||||
url = {https://apps.dtic.mil/docs/citations/ADA589692},
|
||||
pages = {56}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Manned Helicopter Air Ambulance Model
|
||||
|
||||
*Note a technical description of this model has not been publicly released yet. This model was developed to support sUAS well clear research. Until model-specific documentation is released, please cite the following paper.*
|
||||
|
||||
<details> <summary> A. Weinert, S. Campbell, A. Vela, D. Schuldt, and J. Kurucar, “Well-Clear Recommendation for Small Unmanned Aircraft Systems Based on Unmitigated Collision Risk,” Journal of Air Transportation, vol. 26, no. 3, pp. 113–122, 2018.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@article{weinertWellClearRecommendationSmall2018,
|
||||
title = {Well-{Clear} {Recommendation} for {Small} {Unmanned} {Aircraft} {Systems} {Based} on {Unmitigated} {Collision} {Risk}},
|
||||
volume = {26},
|
||||
url = {https://doi.org/10.2514/1.D0091},
|
||||
doi = {10.2514/1.D0091},
|
||||
number = {3},
|
||||
urldate = {2019-01-09},
|
||||
journal = {Journal of Air Transportation},
|
||||
author = {Weinert, Andrew and Campbell, Scot and Vela, Adan and Schuldt, Dieter and Kurucar, Joel},
|
||||
year = {2018},
|
||||
pages = {113--122}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Manned Littoral Model
|
||||
|
||||
*Note this model has been deprecated by the manned uncorrelated model 2.0. Appendix C describes a revised process from the early encounter models for initializing uncorrelated encounters and estimating metrics.*
|
||||
|
||||
<details> <summary> M. W. Edwards, “Encounter Models for the Littoral Regions of the National Airspace System” Massachusetts Institute of Technology, Lincoln Laboratory, CASSATT-2, Sep. 2010.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{edwardsEncounterModelsLittoral2010,
|
||||
title = {Encounter {Models} for the {Littoral} {Regions} of the {National} {Airspace} {System}},
|
||||
url = {https://apps.dtic.mil/docs/citations/ADA529083},
|
||||
language = {en},
|
||||
number = {CASSATT-2},
|
||||
urldate = {2019-01-16},
|
||||
institution = {Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Edwards, Matthew W.},
|
||||
month = sep,
|
||||
year = {2010}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Manned Uncorrelated Model
|
||||
|
||||
<details> <summary> A. J. Weinert, E. P. Harkleroad, J. D. Griffith, M. W. Edwards, and M. J. Kochenderfer, “Uncorrelated Encounter Model of the National Airspace System Version 2.0,” Massachusetts Institute of Technology, Lincoln Laboratory, Lexington, MA, Project Report ATC-404, Aug. 2013.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{weinertUncorrelatedEncounterModel2013,
|
||||
address = {Lexington, MA},
|
||||
type = {Project {Report}},
|
||||
title = {Uncorrelated {Encounter} {Model} of the {National} {Airspace} {System} {Version} 2.0},
|
||||
copyright = {All rights reserved},
|
||||
number = {ATC-404},
|
||||
institution = {Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Weinert, Andrew J. and Harkleroad, Eric P. and Griffith, John D. and Edwards, Matthew W. and Kochenderfer, Mykel J.},
|
||||
month = aug,
|
||||
url = {https://apps.dtic.mil/docs/citations/ADA589697},
|
||||
year = {2013},
|
||||
pages = {93}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> A. J. Weinert, E. Harkleroad, J. Griffith, M. W. Edwards, and C. C. Chen, “Extended Airspace Encounter Models for Unmanned Aircraft Sense and Avoid Safety Evaluation,” in AIAA Infotech@Aerospace (I@A) Conference, Boston, MA, 2013.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@inproceedings{weinertExtendedAirspaceEncounter2013,
|
||||
address = {Boston, MA},
|
||||
title = {Extended {Airspace} {Encounter} {Models} for {Unmanned} {Aircraft} {Sense} and {Avoid} {Safety} {Evaluation}},
|
||||
url = {http://arc.aiaa.org/doi/abs/10.2514/6.2013-5049},
|
||||
doi = {10.2514/6.2013-5049},
|
||||
urldate = {2013-08-23},
|
||||
booktitle = {{AIAA} {Infotech}@{Aerospace} ({I}@{A}) {Conference}},
|
||||
publisher = {American Institute of Aeronautics and Astronautics},
|
||||
author = {Weinert, Andrew J. and Harkleroad, Eric and Griffith, John and Edwards, Matthew W. and Chen, Christine C.},
|
||||
month = aug,
|
||||
year = {2013}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> M. J. Kochenderfer, J. K. Kuchar, L. P. Espindle, and J. D. Griffith, “Uncorrelated Encounter Model of the National Airspace System version 1.0,” MIT Lincoln Laboratory, Lexington, Massachusetts, Project Report ATC-345, 2008.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{kochenderferUncorrelatedEncounterModel2008,
|
||||
type = {Project {Report}},
|
||||
title = {Uncorrelated {Encounter} {Model} of the {National} {Airspace} {System} version 1.0},
|
||||
number = {ATC-345},
|
||||
institution = {MIT Lincoln Laboratory, Lexington, Massachusetts},
|
||||
author = {Kochenderfer, M. J. and Kuchar, J. K. and Espindle, L. P. and Griffith, J. D.},
|
||||
url = {https://www.ll.mit.edu/r-d/publications/uncorrelated-encounter-model-national-airspace-system-version-10},
|
||||
year = {2008}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Manned Unconventional Model
|
||||
|
||||
<details> <summary> M. W. Edwards, M. J. Kochendedrfer, J. K. Kuchar, and L. P. Espindle, “Encounter Models for Unconventional Aircraft, Version 1.0,” Massachusetts Institute of Technology, Lincoln Laboratory, Project Report ATC-348, 2009.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{edwardsEncounterModelsUnconventional2009,
|
||||
type = {Project {Report}},
|
||||
title = {Encounter {Models} for {Unconventional} {Aircraft}, {Version} 1.0},
|
||||
number = {ATC-348},
|
||||
institution = {Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Edwards, Matthew W. and Kochendedrfer, Mykel J. and Kuchar, James K. and Espindle, Leo P.},
|
||||
url = {https://www.ll.mit.edu/r-d/publications/encounter-models-unconventional-aircraft-version-10},
|
||||
year = {2009}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Unmanned Uncorrelated Model
|
||||
|
||||
*Note this model is not a Bayesian Network like the others. Instead representative trajectories are generated by taking account of the operational intent of a UAS based on open source maps of infrastructure, recreational regions, and other common sUAS surveillance targets.*
|
||||
|
||||
<details> <summary> A. Weinert and N. Underhill, “Generating Representative Small UAS Trajectories using Open Source Data,” in 2018 IEEE/AIAA 37th Digital Avionics Systems Conference (DASC), 2018, pp. 1–10.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@inproceedings{weinertGeneratingRepresentativeSmall2018,
|
||||
title = {Generating {Representative} {Small} {UAS} {Trajectories} using {Open} {Source} {Data}},
|
||||
url = {https://ieeexplore.ieee.org/document/8569745},
|
||||
doi = {10.1109/DASC.2018.8569745},
|
||||
booktitle = {2018 {IEEE}/{AIAA} 37th {Digital} {Avionics} {Systems} {Conference} ({DASC})},
|
||||
author = {Weinert, Andrew and Underhill, Ngaire},
|
||||
month = sep,
|
||||
year = {2018},
|
||||
keywords = {Aircraft, Atmospheric modeling, FAA, Monte Carlo methods, Standards, Surveillance, Trajectory},
|
||||
pages = {1--10}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
## Encounter Categories
|
||||
|
||||
The previous [Documentation](#documentation) section provided technical details for each of the models. This section describes the different encounter categories when pairing trajectories from the models. Generally speaking, encounters can be correlated (e.g. ATC involvement) or uncorrelated (e.g. aircraft blunder into close proximity).
|
||||
|
||||
This section describes the encounter categories for different pairing of aircraft. The first column denotes the aircraft of interest (ownship) while the first row denotes the intruder aircraft. There are four encounter categories:
|
||||
|
||||
- C = correlated, assumes ATC involvement
|
||||
- D = uncorrelated, due regard oceanic state aircraft without ATC involvement
|
||||
- U = uncorrelated aircraft likely equipped with transponders but without ATC involvement
|
||||
- V = uncorrelated unconventional aircraft likely without transponders and without ATC involvement
|
||||
|
||||
### Manned vs Manned
|
||||
|
||||
| [Discrete code](#manned-correlated-model) | [1200 Mode C / VFR](#manned-uncorrelated-model) | [Noncooperative conventional](#manned-unconventional-model) | [Noncooperative Unconventional](#manned-unconventional-model) | [Helicopter Air Ambulance](#manned-helicopter-air-ambulance-model)
|
||||
:--- | :---: | :---: | :---: | :---: | :---:
|
||||
**[Discrete code / IFR](#manned-correlated-model)** | C | C | U | V | C
|
||||
**[1200 Mode C / VFR](#manned-uncorrelated-model)** | C | U | U | V | U
|
||||
**[Due Regard](#manned-due-regard)** | U | U | U | V | N/A
|
||||
|
||||
### Unmanned vs Manned
|
||||
|
||||
| [Discrete code](#manned-correlated-model) | [1200 Mode C / VFR](#manned-uncorrelated-model) | [Noncooperative conventional](#manned-unconventional-model) | [Noncooperative Unconventional](#manned-unconventional-model) | [Helicopter Air Ambulance](#manned-helicopter-air-ambulance-model)
|
||||
:--- | :---: | :---: | :---: | :---: | :---:
|
||||
**[sUAS](#unmanned-uncorrelated-model)** | N/A | U | U | V | U
|
||||
|
||||
### Unmanned vs Unmanned
|
||||
|
||||
The aviation community is currently focused on enabling UAS airspace integration and unmanned vs manned encounters. The SARP is currently working towards defining encounter categories for unmanned vs unmanned encounters. This section is scheduled to be updated in 2020.
|
||||
|
||||
## Download
|
||||
|
||||
To provide the community with benchmarks and reduce the barrier of entry to use the encounter models, specific trajectory and encounter sets will be sampled and released to the public. As these become available, the tables below will be updated. The statistical encounter models are currently available through correspondence with the [administrators](mailto:encounter-model-ml-admin@mit.edu).
|
||||
|
||||
### Terminology
|
||||
|
||||
For an uncorrelated encounter, a single aircraft *trajectory* is sampled from an *encounter model* which is *paired* with a different, separately sampled *trajectory* to create one encounter. A collection of encounters, often used for Monte Carlo simulations, are referred to as an *encounter set.* For correlated encounters, both aircraft are sampled together from the same *encounter model.*
|
||||
|
||||
### Trajectories
|
||||
|
||||
ID | Name | Quantity | Description | Access
|
||||
-|-|-| - | -
|
||||
|
||||
### Encounter Sets
|
||||
|
||||
ID | Name | Quantity | Description | Access
|
||||
-|-|-| - | -
|
||||
|
||||
## Select Applications and Use Cases
|
||||
|
||||
A historical perspective and example applications of the encounter models for the TCAS and UAS well clear are presented here.
|
||||
|
||||
Clicking the arrow next the citation will display the Bibtex entry for each citation. Each Bibtex entry includes a URL to access the citation. All citations can also be found in the Zotero group, [airspace-encounter-model](https://www.zotero.org/groups/2359172/airspace-encounter-models/items).
|
||||
|
||||
### Historical Perspective
|
||||
|
||||
Airspace encounter models have evolved significantly over the past 35 years. Starting in the 1980s with a model of aircraft equipped with transponders that are cooperatively sharing information and allowed only two-dimensional (vertical plane motion). It was built by the MITRE Corporation from 12 radar sites and supported the development and certification of the TCAS. The 1990s saw the International Civil Aviation Organization (ICAO) and Eurocontrol and lead development of simplified models with three-dimensional motion. Notably, the lowest altitude considered by the Eurocontrol model was 1,000-5,000 ft. This was indicative of the encounter models support for large manned aircraft avoidance.
|
||||
|
||||
The next major encounter model advancement started in 2006, with recognizing the need for three-dimension models with multiple acceleration points to support manned and unmanned safety analysis. In response starting in 2008, MIT Lincoln Laboratory started developing more advanced encounter models to represent a wider range of encounters.
|
||||
|
||||
|
||||
|
||||
The following are recommended seminal citations for the original encounter model development in the 1980s up to the early 2000s, immediately prior to the development of the MIT Lincoln Laboratory encounters models. Please refer to the [Documentation](#documentation) section for details on the MIT Lincoln Laboratory encounter models and development since 2008.
|
||||
|
||||
<details> <summary> A. Zeitlin, A. Lacher, J. Kuchar, and A. Drumm, “Collision Avoidance for Unmanned Aircraft: Proving the Safety Case,” The MITRE Corporation and Massachusetts Institute of Technology, Lincoln Laboratory, MP-060219, Oct. 2006.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{zeitlinCollisionAvoidanceUnmanned2006,
|
||||
title = {Collision {Avoidance} for {Unmanned} {Aircraft}: {Proving} the {Safety} {Case}},
|
||||
shorttitle = {Collision {Avoidance} for {Unmanned} {Aircraft}},
|
||||
url = {https://apps.dtic.mil/docs/citations/ADA474336},
|
||||
language = {en},
|
||||
number = {MP-060219},
|
||||
urldate = {2019-01-16},
|
||||
institution = {The MITRE Corporation and Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Zeitlin, Andrew and Lacher, Andrew and Kuchar, James and Drumm, Ann},
|
||||
month = oct,
|
||||
year = {2006},
|
||||
pages = {12}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> T. Miquel and K. Thierry, “European Encounter Model: specifications and probability tables,” CENA/Sofréavia and QinetiQ, Technical Report ACASA/WP1/186 version 2.1, Dec. 2001.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{miquelEuropeanEncounterModel2001,
|
||||
type = {Technical {Report}},
|
||||
title = {European {Encounter} {Model}: specifications and probability tables},
|
||||
number = {ACASA/WP1/186 version 2.1},
|
||||
institution = {CENA/Sofréavia and QinetiQ},
|
||||
author = {Miquel, Thierry and Thierry, Kevin},
|
||||
month = dec,
|
||||
year = {2001}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> M. P. McLaughlin, “Safety study of the Traffic Alert and Collision Avoidance System (TCAS II),” MITRE Corporation, MITRE Technical Report MTR 97W32, Jun. 1997.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{mclaughlinSafetyStudyTraffic1997,
|
||||
type = {{MITRE} {Technical} {Report}},
|
||||
title = {Safety study of the {Traffic} {Alert} and {Collision} {Avoidance} {System} ({TCAS} {II})},
|
||||
number = {MTR 97W32},
|
||||
institution = {MITRE Corporation},
|
||||
author = {McLaughlin, Michael P.},
|
||||
month = jun,
|
||||
year = {1997}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> J. Lebron, “System Safety Study of Minimum TCAS II,” The MITRE Corporation, Final Report MTR-83W241, Dec. 1983.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{lebronSystemSafetyStudy1983,
|
||||
type = {Final {Report}},
|
||||
title = {System {Safety} {Study} of {Minimum} {TCAS} {II}},
|
||||
url = {https://apps.dtic.mil/docs/citations/ADA138674},
|
||||
number = {MTR-83W241},
|
||||
institution = {The MITRE Corporation},
|
||||
author = {Lebron, John},
|
||||
month = dec,
|
||||
year = {1983},
|
||||
pages = {376}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Well Clear for UAS
|
||||
|
||||
The [UAS ExCOM SARP](#uas-excom-science-and-research-panel) sampled the encounter models to generate manned aircraft intruder trajectories and simulate them with either large or small UAS trajectories to evaluate various candidates for an unmanned aircraft well clear seperation criteria. The [uncorrelated UAS model](#unmanned-uncorrelated-model) was specifically developed by the SARP to support small UAS research.
|
||||
|
||||
<details> <summary> E. T. Lester and A. Weinert, “Three Quantitative Means to Remain Well Clear for Small UAS in the Terminal Area,” in 2019 Integrated Communications, Navigation and Surveillance Conference (ICNS), Herndon, VA, USA, USA, 2019, pp. 1–17.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@inproceedings{lesterThreeQuantitativeMeans2019,
|
||||
address = {Herndon, VA, USA},
|
||||
title = {Three {Quantitative} {Means} to {Remain} {Well} {Clear} for {Small} {UAS} in the {Terminal} {Area}},
|
||||
url = {https://doi.org/10.1109/ICNSURV.2019.8735171},
|
||||
doi = {10.1109/ICNSURV.2019.8735171},
|
||||
booktitle = {2019 {Integrated} {Communications}, {Navigation} and {Surveillance} {Conference} ({ICNS})},
|
||||
author = {Lester, Edward Ted and Weinert, Andrew},
|
||||
month = apr,
|
||||
year = {2019},
|
||||
pages = {1--17}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> A. Weinert, S. Campbell, A. Vela, D. Schuldt, and J. Kurucar, “Well-Clear Recommendation for Small Unmanned Aircraft Systems Based on Unmitigated Collision Risk,” Journal of Air Transportation, vol. 26, no. 3, pp. 113–122, 2018.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@article{weinertWellClearRecommendationSmall2018,
|
||||
title = {Well-{Clear} {Recommendation} for {Small} {Unmanned} {Aircraft} {Systems} {Based} on {Unmitigated} {Collision} {Risk}},
|
||||
volume = {26},
|
||||
url = {https://doi.org/10.2514/1.D0091},
|
||||
doi = {10.2514/1.D0091},
|
||||
number = {3},
|
||||
urldate = {2019-01-09},
|
||||
journal = {Journal of Air Transportation},
|
||||
author = {Weinert, Andrew and Campbell, Scot and Vela, Adan and Schuldt, Dieter and Kurucar, Joel},
|
||||
year = {2018},
|
||||
pages = {113--122}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> S. P. Cook, D. Brooks, R. Cole, D. Hackenberg, and V. Raska, “Defining Well Clear for Unmanned Aircraft Systems,” in AIAA Infotech @ Aerospace, Kissimmee, Florida, 2015.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@inproceedings{cookDefiningWellClear2015,
|
||||
address = {Kissimmee, Florida},
|
||||
series = {{AIAA} {SciTech} {Forum}},
|
||||
title = {Defining {Well} {Clear} for {Unmanned} {Aircraft} {Systems}},
|
||||
url = {https://arc.aiaa.org/doi/10.2514/6.2015-0481},
|
||||
doi = {10.2514/6.2015-0481},
|
||||
urldate = {2019-01-09},
|
||||
booktitle = {{AIAA} {Infotech} @ {Aerospace}},
|
||||
publisher = {American Institute of Aeronautics and Astronautics},
|
||||
author = {Cook, Stephen P. and Brooks, Dallas and Cole, Rodney and Hackenberg, Davis and Raska, Vincent},
|
||||
month = jan,
|
||||
year = {2015}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<br>
|
||||
Other well clear efforts that also leveraged the encounter models include the following: <br> <br>
|
||||
|
||||
<details> <summary> C. Chen et al., “Defining Well Clear Separation for Unmanned Aircraft Systems Operating with Noncooperative Aircraft,” in AIAA Aviation 2019 Forum, Dallas, Texas, 2019.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@inproceedings{chenDefiningWellClear2019,
|
||||
address = {Dallas, Texas},
|
||||
title = {Defining {Well} {Clear} {Separation} for {Unmanned} {Aircraft} {Systems} {Operating} with {Noncooperative} {Aircraft}},
|
||||
url = {https://arc.aiaa.org/doi/abs/10.2514/6.2019-3512},
|
||||
doi = {10.2514/6.2019-3512},
|
||||
language = {en},
|
||||
urldate = {2019-08-20},
|
||||
booktitle = {{AIAA} {Aviation} 2019 {Forum}},
|
||||
publisher = {American Institute of Aeronautics and Astronautics},
|
||||
author = {Chen, Christine and Edwards, Matthew W. and Gill, Bilal and Smearcheck, Samantha and Adami, Tony and Calhoun, Sean and Wu, Minghong G. and Cone, Andrew and Lee, Seung Man},
|
||||
month = jun,
|
||||
year = {2019}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> R. E. Weibel, M. W. M. Edwards, and C. S. Fernandes, “Establishing a Risk-Based Separation Standard for Unmanned Aircraft Self Separation,” in Ninth USA/Europe Air Traffic Management Research & Development Seminar, 2011.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@inproceedings{weibelEstablishingRiskBasedSeparation2011,
|
||||
title = {Establishing a {Risk}-{Based} {Separation} {Standard} for {Unmanned} {Aircraft} {Self} {Separation}},
|
||||
doi = {10.2514/6.2011-6921},
|
||||
booktitle = {Ninth {USA}/{Europe} {Air} {Traffic} {Management} {Research} \& {Development} {Seminar}},
|
||||
publisher = {American Institute of Aeronautics and Astronautics},
|
||||
author = {Weibel, Roland E. and Edwards, Matthew W. M. and Fernandes, Caroline S.},
|
||||
url = {https://doi.org/10.2514/6.2011-6921},
|
||||
month = sep,
|
||||
year = {2011}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
### Evaluation of TCAS II Version 7.1
|
||||
|
||||
The modern encounter models were first used for a safety study, funded by the TCAS program office, that evaluated and validated the upgrade of TCAS II to Version 7.1. The success of this evaluation laid the groundwork for subsequent safety studies.
|
||||
|
||||
<details> <summary> L. P. Espindle, J. D. Griffith, and J. K. Kuchar, “Safety Analysis of Upgrading to TCAS Version 7.1 Using the 2008 U.S. Correlated Encounter Model,” Massachusetts Institute of Technology, Lincoln Laboratory, Project Report ATC-349, 2009.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{espindleSafetyAnalysisUpgrading2009,
|
||||
type = {Project {Report}},
|
||||
title = {Safety {Analysis} of {Upgrading} to {TCAS} {Version} 7.1 {Using} the 2008 {U}.{S}. {Correlated} {Encounter} {Model}},
|
||||
number = {ATC-349},
|
||||
institution = {Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Espindle, L. P. and Griffith, J. D. and Kuchar, J. K.},
|
||||
url = {https://www.ll.mit.edu/r-d/publications/safety-analysis-upgrading-tcas-version-71-using-2008-us-correlated-encounter-model},
|
||||
year = {2009}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary> B. J. Chludzinski, “Evaluation of TCAS II Version 7.1 Using the FAA Fast-Time Encounter Generator Model,” Massachusetts Institute of Technology, Lincoln Laboratory, Project Report ATC-346 Volume 1, Apr. 2009.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{chludzinskiEvaluationTCASII2009,
|
||||
type = {Project {Report}},
|
||||
title = {Evaluation of {TCAS} {II} {Version} 7.1 {Using} the {FAA} {Fast}-{Time} {Encounter} {Generator} {Model}},
|
||||
number = {ATC-346 Volume 1},
|
||||
institution = {Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Chludzinski, Barbara J.},
|
||||
url = {https://www.ll.mit.edu/r-d/publications/evaluation-tcas-ii-version-71-using-faa-fast-time-encounter-generator-model-volume},
|
||||
month = apr,
|
||||
year = {2009}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
<details> <summary>B. J. Chludzinski, “Evaluation of TCAS II Version 7.1 Using the FAA Fast-Time Encounter Generator Model-Appendix,” Massachusetts Institute of Technology, Lincoln Laboratory, Project Report ATC-346 Volume 2, Apr. 2009.</summary>
|
||||
<p>
|
||||
|
||||
```tex
|
||||
@techreport{chludzinskiEvaluationTCASII2009a,
|
||||
type = {Project {Report}},
|
||||
title = {Evaluation of {TCAS} {II} {Version} 7.1 {Using} the {FAA} {Fast}-{Time} {Encounter} {Generator} {Model}-{Appendix}},
|
||||
number = {ATC-346 Volume 2},
|
||||
institution = {Massachusetts Institute of Technology, Lincoln Laboratory},
|
||||
author = {Chludzinski, Barbara J.},
|
||||
url = {https://www.ll.mit.edu/r-d/publications/evaluation-tcas-ii-version-71-using-faa-fast-time-encounter-generator-model},
|
||||
month = apr,
|
||||
year = {2009}
|
||||
}
|
||||
```
|
||||
</p>
|
||||
</details>
|
||||
|
||||
## Distribution Statement
|
||||
|
||||
DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.
|
||||
|
||||
This material is based upon work supported by the Federal Aviation Administration under Air Force Contract No. FA8702-15-D-0001.
|
||||
|
||||
Any opinions, findings, conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Federal Aviation Administration.
|
||||
|
||||
This document is derived from work done for the FAA (and possibly others), it is not the direct product of work done for the FAA. The information provided herein may include content supplied by third parties. Although the data and information contained herein has been produced or processed from sources believed to be reliable, the Federal Aviation Administration makes no warranty, expressed or implied, regarding the accuracy, adequacy, completeness, legality, reliability or usefulness of any information, conclusions or recommendations provided herein. Distribution of the information contained herein does not constitute an endorsement or warranty of the data or information provided herein by the Federal Aviation Administration or the U.S. Department of Transportation. Neither the Federal Aviation Administration nor the U.S. Department of Transportation shall be held liable for any improper or incorrect use of the information contained herein and assumes no responsibility for anyone’s use of the information. The Federal Aviation Administration and U.S. Department of Transportation shall not be liable for any claim for any loss, harm, or other damages arising from access to or use of data or information, including without limitation any direct, indirect, incidental, exemplary, special or consequential damages, even if advised of the possibility of such damages. The Federal Aviation Administration shall not be liable to anyone for any decision made or action taken, or not taken, in reliance on the information contained herein.
|
||||
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||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
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|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
|
||||
|
||||
|
||||
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<img src="https://assets.llcad-github.llan.ll.mit.edu/images/spinners/octocat-spinner-128.gif" alt="Octocat Spinner Icon" class="m-2" width="28">
|
||||
</li>
|
||||
</ul>
|
||||
|
||||
</div>
|
||||
</label>
|
||||
</form> </div>
|
||||
</div>
|
||||
|
||||
|
||||
<nav class="d-flex" aria-label="Global">
|
||||
|
||||
<a class="js-selected-navigation-item Header-link mr-3" data-hotkey="g p" data-ga-click="Header, click, Nav menu - item:pulls context:user" aria-label="Pull requests you created" data-selected-links="/pulls /pulls/assigned /pulls/mentioned /pulls" href="/pulls">
|
||||
Pull requests
|
||||
</a>
|
||||
<a class="js-selected-navigation-item Header-link mr-3" data-hotkey="g i" data-ga-click="Header, click, Nav menu - item:issues context:user" aria-label="Issues you created" data-selected-links="/issues /issues/assigned /issues/mentioned /issues" href="/issues">
|
||||
Issues
|
||||
</a>
|
||||
|
||||
<a class="js-selected-navigation-item Header-link mr-3" data-ga-click="Header, click, Nav menu - item:explore" data-selected-links="/explore /trending /trending/developers /integrations /integrations/feature/code /integrations/feature/collaborate /integrations/feature/ship showcases showcases_search showcases_landing /explore" href="/explore">
|
||||
Explore
|
||||
</a>
|
||||
</nav>
|
||||
|
||||
</div>
|
||||
|
||||
|
||||
<div class="Header-item">
|
||||
|
||||
<a aria-label="You have no unread notifications" class="Header-link notification-indicator tooltipped tooltipped-s js-socket-channel js-notification-indicator" data-hotkey="g n" data-ga-click="Header, go to notifications, icon:read" data-channel="notification-changed:303" href="/notifications">
|
||||
<span class="mail-status "></span>
|
||||
<svg class="octicon octicon-bell" viewBox="0 0 14 16" version="1.1" width="14" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M14 12v1H0v-1l.73-.58c.77-.77.81-2.55 1.19-4.42C2.69 3.23 6 2 6 2c0-.55.45-1 1-1s1 .45 1 1c0 0 3.39 1.23 4.16 5 .38 1.88.42 3.66 1.19 4.42l.66.58H14zm-7 4c1.11 0 2-.89 2-2H5c0 1.11.89 2 2 2z"/></svg>
|
||||
</a>
|
||||
</div>
|
||||
|
||||
|
||||
<div class="Header-item position-relative">
|
||||
<details class="details-overlay details-reset">
|
||||
<summary class="Header-link"
|
||||
aria-label="Create new…"
|
||||
data-ga-click="Header, create new, icon:add">
|
||||
<svg class="octicon octicon-plus" viewBox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M12 9H7v5H5V9H0V7h5V2h2v5h5v2z"/></svg> <span class="dropdown-caret"></span>
|
||||
</summary>
|
||||
<details-menu class="dropdown-menu dropdown-menu-sw">
|
||||
|
||||
<a role="menuitem" class="dropdown-item" href="/new" data-ga-click="Header, create new repository">
|
||||
New repository
|
||||
</a>
|
||||
|
||||
|
||||
<a role="menuitem" class="dropdown-item" href="https://gist.llcad-github.llan.ll.mit.edu/" data-ga-click="Header, create new gist">
|
||||
New gist
|
||||
</a>
|
||||
|
||||
<a role="menuitem" class="dropdown-item" href="/organizations/new" data-ga-click="Header, create new organization">
|
||||
New organization
|
||||
</a>
|
||||
|
||||
|
||||
<div class="dropdown-divider"></div>
|
||||
<div class="dropdown-header">
|
||||
<span title="UAS-Analysis/encounter_model">This repository</span>
|
||||
</div>
|
||||
<a role="menuitem" class="dropdown-item" href="/UAS-Analysis/encounter_model/issues/new" data-ga-click="Header, create new issue" >
|
||||
New issue
|
||||
</a>
|
||||
|
||||
|
||||
</details-menu>
|
||||
</details>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="Header-item position-relative mr-0">
|
||||
|
||||
<details class="details-overlay details-reset">
|
||||
<summary class="Header-link"
|
||||
aria-label="View profile and more"
|
||||
data-ga-click="Header, show menu, icon:avatar">
|
||||
<img alt="@aweinert" class="avatar" src="https://avatars.llcad-github.llan.ll.mit.edu/u/303?s=40" height="20" width="20">
|
||||
<span class="dropdown-caret"></span>
|
||||
</summary>
|
||||
<details-menu class="dropdown-menu dropdown-menu-sw mt-2" style="width: 180px">
|
||||
<div class="header-nav-current-user css-truncate"><a role="menuitem" class="no-underline user-profile-link px-3 pt-2 pb-2 mb-n2 mt-n1 d-block" href="/aweinert" data-ga-click="Header, go to profile, text:Signed in as">Signed in as <strong class="css-truncate-target">aweinert</strong></a></div>
|
||||
<div class="dropdown-divider"></div>
|
||||
|
||||
<div class="pl-3 pr-5 f6 user-status-container js-user-status-context pb-1" data-url="/users/status?compact=1&link_mentions=0&truncate=1">
|
||||
|
||||
<div class="js-user-status-container user-status-compact" data-team-hovercards-enabled>
|
||||
<details class="js-user-status-details details-reset details-overlay details-overlay-dark">
|
||||
<summary class="btn-link no-underline js-toggle-user-status-edit toggle-user-status-edit width-full " aria-haspopup="dialog" role="menuitem">
|
||||
<div class="f6 d-inline-block v-align-middle user-status-emoji-only-header circle lh-condensed user-status-header " style="max-width: 29px">
|
||||
<div class="user-status-emoji-container flex-shrink-0 mr-1">
|
||||
<div><g-emoji class="g-emoji" alias="cityscape" fallback-src="https://assets.llcad-github.llan.ll.mit.edu/images/icons/emoji/unicode/1f3d9.png">🏙</g-emoji></div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="d-inline-block v-align-middle user-status-message-wrapper f6 lh-condensed ws-normal pt-1">
|
||||
New York City
|
||||
</div>
|
||||
</summary> <details-dialog class="details-dialog rounded-1 anim-fade-in fast Box Box--overlay" role="dialog" tabindex="-1">
|
||||
<!-- '"` --><!-- </textarea></xmp> --></option></form><form class="position-relative flex-auto js-user-status-form" action="/users/status?compact=1&link_mentions=0&truncate=1" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓" /><input type="hidden" name="_method" value="put" /><input type="hidden" name="authenticity_token" value="EvW/IxRq2gU4Vp9VGkCyS02P8cNtFtrD7p9WBJ1pWnSgCQAXibF9mzoXqji/Dy+kOyT8+1Z9F+LQMJW9QAVXvQ==" />
|
||||
<div class="Box-header bg-gray border-bottom p-3">
|
||||
<button class="Box-btn-octicon js-toggle-user-status-edit btn-octicon float-right" type="reset" aria-label="Close dialog" data-close-dialog>
|
||||
<svg class="octicon octicon-x" viewBox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.48 8l3.75 3.75-1.48 1.48L6 9.48l-3.75 3.75-1.48-1.48L4.52 8 .77 4.25l1.48-1.48L6 6.52l3.75-3.75 1.48 1.48L7.48 8z"/></svg>
|
||||
</button>
|
||||
<h3 class="Box-title f5 text-bold text-gray-dark">Edit status</h3>
|
||||
</div>
|
||||
<input type="hidden" name="emoji" class="js-user-status-emoji-field" value=":cityscape:">
|
||||
<input type="hidden" name="organization_id" class="js-user-status-org-id-field" value="">
|
||||
<div class="px-3 py-2 text-gray-dark">
|
||||
<div class="js-characters-remaining-container js-suggester-container position-relative mt-2">
|
||||
<div class="input-group d-table form-group my-0 js-user-status-form-group">
|
||||
<span class="input-group-button d-table-cell v-align-middle" style="width: 1%">
|
||||
<button type="button" aria-label="Choose an emoji" class="btn-outline btn js-toggle-user-status-emoji-picker btn-open-emoji-picker">
|
||||
<span class="js-user-status-original-emoji" hidden><div><g-emoji class="g-emoji" alias="cityscape" fallback-src="https://assets.llcad-github.llan.ll.mit.edu/images/icons/emoji/unicode/1f3d9.png">🏙</g-emoji></div></span>
|
||||
<span class="js-user-status-custom-emoji"><div><g-emoji class="g-emoji" alias="cityscape" fallback-src="https://assets.llcad-github.llan.ll.mit.edu/images/icons/emoji/unicode/1f3d9.png">🏙</g-emoji></div></span>
|
||||
<span class="js-user-status-no-emoji-icon" hidden>
|
||||
<svg class="octicon octicon-smiley" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M8 0C3.58 0 0 3.58 0 8s3.58 8 8 8 8-3.58 8-8-3.58-8-8-8zm4.81 12.81a6.72 6.72 0 0 1-2.17 1.45c-.83.36-1.72.53-2.64.53-.92 0-1.81-.17-2.64-.53-.81-.34-1.55-.83-2.17-1.45a6.773 6.773 0 0 1-1.45-2.17A6.59 6.59 0 0 1 1.21 8c0-.92.17-1.81.53-2.64.34-.81.83-1.55 1.45-2.17.62-.62 1.36-1.11 2.17-1.45A6.59 6.59 0 0 1 8 1.21c.92 0 1.81.17 2.64.53.81.34 1.55.83 2.17 1.45.62.62 1.11 1.36 1.45 2.17.36.83.53 1.72.53 2.64 0 .92-.17 1.81-.53 2.64-.34.81-.83 1.55-1.45 2.17zM4 6.8v-.59c0-.66.53-1.19 1.2-1.19h.59c.66 0 1.19.53 1.19 1.19v.59c0 .67-.53 1.2-1.19 1.2H5.2C4.53 8 4 7.47 4 6.8zm5 0v-.59c0-.66.53-1.19 1.2-1.19h.59c.66 0 1.19.53 1.19 1.19v.59c0 .67-.53 1.2-1.19 1.2h-.59C9.53 8 9 7.47 9 6.8zm4 3.2c-.72 1.88-2.91 3-5 3s-4.28-1.13-5-3c-.14-.39.23-1 .66-1h8.59c.41 0 .89.61.75 1z"/></svg>
|
||||
</span>
|
||||
</button>
|
||||
</span>
|
||||
<input type="text" autocomplete="off" data-maxlength="80" class="js-suggester-field d-table-cell width-full form-control js-user-status-message-field js-characters-remaining-field" placeholder="What's happening?" name="message" required value="New York City" aria-label="What is your current status?">
|
||||
<div class="error">Could not update your status, please try again.</div>
|
||||
</div>
|
||||
<div class="suggester-container">
|
||||
<div class="suggester js-suggester js-navigation-container" data-url="/autocomplete/user-suggestions" data-no-org-url="/autocomplete/user-suggestions" data-org-url="/suggestions" hidden>
|
||||
</div>
|
||||
</div>
|
||||
<div style="margin-left: 53px" class="my-1 text-small label-characters-remaining js-characters-remaining" data-suffix="remaining" hidden>
|
||||
80 remaining
|
||||
</div>
|
||||
</div>
|
||||
<include-fragment class="js-user-status-emoji-picker" data-url="/users/status/emoji"></include-fragment>
|
||||
<div class="overflow-auto border-bottom ml-n3 mr-n3 px-3" style="max-height: 33vh">
|
||||
<div class="user-status-suggestions js-user-status-suggestions collapsed overflow-hidden">
|
||||
<h4 class="f6 text-normal my-3">Suggestions:</h4>
|
||||
<div class="mx-3 mt-2 clearfix">
|
||||
<div class="float-left col-6">
|
||||
<button type="button" value=":palm_tree:" class="d-flex flex-items-baseline flex-items-stretch lh-condensed f6 btn-link link-gray no-underline js-predefined-user-status mb-1">
|
||||
<div class="emoji-status-width mr-2 v-align-middle js-predefined-user-status-emoji">
|
||||
<g-emoji alias="palm_tree" fallback-src="https://assets.llcad-github.llan.ll.mit.edu/images/icons/emoji/unicode/1f334.png">🌴</g-emoji>
|
||||
</div>
|
||||
<div class="d-flex flex-items-center no-underline js-predefined-user-status-message" style="border-left: 1px solid transparent">
|
||||
On vacation
|
||||
</div>
|
||||
</button>
|
||||
<button type="button" value=":face_with_thermometer:" class="d-flex flex-items-baseline flex-items-stretch lh-condensed f6 btn-link link-gray no-underline js-predefined-user-status mb-1">
|
||||
<div class="emoji-status-width mr-2 v-align-middle js-predefined-user-status-emoji">
|
||||
<g-emoji alias="face_with_thermometer" fallback-src="https://assets.llcad-github.llan.ll.mit.edu/images/icons/emoji/unicode/1f912.png">🤒</g-emoji>
|
||||
</div>
|
||||
<div class="d-flex flex-items-center no-underline js-predefined-user-status-message" style="border-left: 1px solid transparent">
|
||||
Out sick
|
||||
</div>
|
||||
</button>
|
||||
</div>
|
||||
<div class="float-left col-6">
|
||||
<button type="button" value=":house:" class="d-flex flex-items-baseline flex-items-stretch lh-condensed f6 btn-link link-gray no-underline js-predefined-user-status mb-1">
|
||||
<div class="emoji-status-width mr-2 v-align-middle js-predefined-user-status-emoji">
|
||||
<g-emoji alias="house" fallback-src="https://assets.llcad-github.llan.ll.mit.edu/images/icons/emoji/unicode/1f3e0.png">🏠</g-emoji>
|
||||
</div>
|
||||
<div class="d-flex flex-items-center no-underline js-predefined-user-status-message" style="border-left: 1px solid transparent">
|
||||
Working from home
|
||||
</div>
|
||||
</button>
|
||||
<button type="button" value=":dart:" class="d-flex flex-items-baseline flex-items-stretch lh-condensed f6 btn-link link-gray no-underline js-predefined-user-status mb-1">
|
||||
<div class="emoji-status-width mr-2 v-align-middle js-predefined-user-status-emoji">
|
||||
<g-emoji alias="dart" fallback-src="https://assets.llcad-github.llan.ll.mit.edu/images/icons/emoji/unicode/1f3af.png">🎯</g-emoji>
|
||||
</div>
|
||||
<div class="d-flex flex-items-center no-underline js-predefined-user-status-message" style="border-left: 1px solid transparent">
|
||||
Focusing
|
||||
</div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="user-status-limited-availability-container">
|
||||
<div class="form-checkbox my-0">
|
||||
<input type="checkbox" name="limited_availability" value="1" class="js-user-status-limited-availability-checkbox" data-default-message="I may be slow to respond." aria-describedby="limited-availability-help-text-truncate-true" id="limited-availability-truncate-true">
|
||||
<label class="d-block f5 text-gray-dark mb-1" for="limited-availability-truncate-true">
|
||||
Busy
|
||||
</label>
|
||||
<p class="note" id="limited-availability-help-text-truncate-true">
|
||||
When others mention you, assign you, or request your review,
|
||||
GitHub will let them know that you have limited availability.
|
||||
</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<include-fragment class="js-user-status-org-picker" data-url="/users/status/organizations"></include-fragment>
|
||||
</div>
|
||||
<div class="d-flex flex-items-center flex-justify-between p-3 border-top">
|
||||
<button type="submit" class="width-full btn btn-primary mr-2 js-user-status-submit">
|
||||
Set status
|
||||
</button>
|
||||
<button type="button" class="width-full js-clear-user-status-button btn ml-2 js-user-status-exists">
|
||||
Clear status
|
||||
</button>
|
||||
</div>
|
||||
</form> </details-dialog>
|
||||
</details>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
<div class="dropdown-divider"></div>
|
||||
|
||||
|
||||
<a role="menuitem" class="dropdown-item" href="/aweinert" data-ga-click="Header, go to profile, text:your profile">Your profile</a>
|
||||
<a role="menuitem" class="dropdown-item" href="/aweinert?tab=repositories" data-ga-click="Header, go to repositories, text:your repositories">Your repositories</a>
|
||||
|
||||
<a role="menuitem" class="dropdown-item" href="/aweinert?tab=projects" data-ga-click="Header, go to projects, text:your projects">Your projects</a>
|
||||
|
||||
<a role="menuitem" class="dropdown-item" href="/aweinert?tab=stars" data-ga-click="Header, go to starred repos, text:your stars">Your stars</a>
|
||||
<a role="menuitem" class="dropdown-item" href="https://gist.llcad-github.llan.ll.mit.edu/" data-ga-click="Header, your gists, text:your gists">Your gists</a>
|
||||
|
||||
<div class="dropdown-divider"></div>
|
||||
<a role="menuitem" class="dropdown-item" href="https://help.github.com/enterprise/2.17/user" data-ga-click="Header, go to help, text:help">Help</a>
|
||||
<a role="menuitem" class="dropdown-item" href="/settings/profile" data-ga-click="Header, go to settings, icon:settings">Settings</a>
|
||||
<!-- '"` --><!-- </textarea></xmp> --></option></form><form class="logout-form" action="/logout" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓" /><input type="hidden" name="authenticity_token" value="IetAC1bzM1UxDIlkDdrQNGGWQfash1JUXUmqYwCuEDCji7d86f/AyGO9R2tE5OUBv4OazY5vVkzMr1eV/sJZlQ==" />
|
||||
|
||||
<button type="submit" class="dropdown-item dropdown-signout" data-ga-click="Header, sign out, icon:logout" role="menuitem">
|
||||
Sign out
|
||||
</button>
|
||||
</form> </details-menu>
|
||||
</details>
|
||||
|
||||
</div>
|
||||
|
||||
</header>
|
||||
|
||||
|
||||
|
||||
</div>
|
||||
|
||||
<div id="start-of-content" class="show-on-focus"></div>
|
||||
|
||||
|
||||
<div id="js-flash-container">
|
||||
|
||||
</div>
|
||||
|
||||
|
||||
|
||||
<div class="application-main " data-commit-hovercards-enabled>
|
||||
<div itemscope itemtype="http://schema.org/SoftwareSourceCode" class="">
|
||||
<main id="js-repo-pjax-container" data-pjax-container >
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<div class="pagehead repohead instapaper_ignore readability-menu experiment-repo-nav ">
|
||||
<div class="repohead-details-container clearfix container">
|
||||
|
||||
<ul class="pagehead-actions">
|
||||
|
||||
|
||||
|
||||
<li>
|
||||
|
||||
<!-- '"` --><!-- </textarea></xmp> --></option></form><form data-remote="true" class="clearfix js-social-form js-social-container" action="/notifications/subscribe" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓" /><input type="hidden" name="authenticity_token" value="imVYw0pCJWRwePrfFFGghUCD2Qw7ApJVnX4yYHrw8vj2ORbwSWOM4OZIlI8WykJPmYXTwkdlGnYL6iJW/Uh4iA==" /> <input type="hidden" name="repository_id" value="10913">
|
||||
|
||||
<details class="details-reset details-overlay select-menu float-left">
|
||||
<summary class="select-menu-button float-left btn btn-sm btn-with-count" data-ga-click="Repository, click Watch settings, action:blob#show"> <span data-menu-button>
|
||||
<svg class="octicon octicon-eye v-align-text-bottom" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M8.06 2C3 2 0 8 0 8s3 6 8.06 6C13 14 16 8 16 8s-3-6-7.94-6zM8 12c-2.2 0-4-1.78-4-4 0-2.2 1.8-4 4-4 2.22 0 4 1.8 4 4 0 2.22-1.78 4-4 4zm2-4c0 1.11-.89 2-2 2-1.11 0-2-.89-2-2 0-1.11.89-2 2-2 1.11 0 2 .89 2 2z"/></svg>
|
||||
Unwatch
|
||||
</span>
|
||||
</summary> <details-menu
|
||||
class="select-menu-modal position-absolute mt-5"
|
||||
style="z-index: 99; ">
|
||||
<div class="select-menu-header">
|
||||
<span class="select-menu-title">Notifications</span>
|
||||
</div>
|
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||||
<svg class="octicon octicon-x" viewBox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.48 8l3.75 3.75-1.48 1.48L6 9.48l-3.75 3.75-1.48-1.48L4.52 8 .77 4.25l1.48-1.48L6 6.52l3.75-3.75 1.48 1.48L7.48 8z"/></svg>
|
||||
</button>
|
||||
<div class="octocat-spinner my-6 js-details-dialog-spinner"></div>
|
||||
</details-dialog>
|
||||
</details>
|
||||
</template>
|
||||
|
||||
<div class="Popover js-hovercard-content position-absolute" style="display: none; outline: none;" tabindex="0">
|
||||
<div class="Popover-message Popover-message--bottom-left Popover-message--large Box box-shadow-large" style="width:360px;">
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div aria-live="polite" class="js-global-screen-reader-notice sr-only"></div>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
|
||||
BIN
images/nmeth.1618-F2.jpg
Normal file
BIN
images/nmeth.1618-F2.jpg
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 55 KiB |
BIN
images/workflow.png
Normal file
BIN
images/workflow.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 66 KiB |
BIN
images/workflow.vsdx
Normal file
BIN
images/workflow.vsdx
Normal file
Binary file not shown.
Reference in New Issue
Block a user