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Jon Kraft
2024-01-23 06:24:13 -07:00
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parent 266b3b0058
commit 78134bbf70
4 changed files with 114 additions and 105 deletions
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59
CFAR_RADAR_Waterfall.py
View File

@@ -33,8 +33,8 @@
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
'''FMCW Radar Demo with Phaser (CN0566)
Jon Kraft, Nov 19 2023'''
'''CFAR Radar Demo with Phaser (CN0566)
Jon Kraft, Jan 20 2024'''
# Imports
import adi
@@ -79,8 +79,9 @@ except:
sample_rate = 0.6e6
center_freq = 2.1e9
signal_freq = 100e3
num_slices = 50
fft_size = 1024 * 16
num_slices = 20 # this sets how much time will be displayed on the waterfall plot
fft_size = 1024 * 4
plot_freq = 100e3 # x-axis freq range to plot
img_array = np.ones((num_slices, fft_size))*(-100)
# Configure SDR Rx
@@ -102,9 +103,8 @@ my_sdr.tx_hardwaregain_chan1 = -0 # must be between 0 and -88
# Configure the ADF4159 Rampling PLL
output_freq = 12.145e9
BW = 500e6
num_steps = 1000
ramp_time = 1.2e3 # us
ramp_time_s = ramp_time / 1e6
num_steps = 500
ramp_time = 0.5e3 # us
my_phaser.frequency = int(output_freq / 4) # Output frequency divided by 4
my_phaser.freq_dev_range = int(
BW / 4
@@ -116,7 +116,9 @@ my_phaser.freq_dev_time = int(
ramp_time
) # total time (in us) of the complete frequency ramp
print("requested freq dev time = ", ramp_time)
print("actual freq dev time = ", my_phaser.freq_dev_time)
ramp_time = my_phaser.freq_dev_time
ramp_time_s = ramp_time / 1e6
print("actual freq dev time = ", ramp_time)
my_phaser.delay_word = 4095 # 12 bit delay word. 4095*PFD = 40.95 us. For sawtooth ramps, this is also the length of the Ramp_complete signal
my_phaser.delay_clk = "PFD" # can be 'PFD' or 'PFD*CLK1'
my_phaser.delay_start_en = 0 # delay start
@@ -151,7 +153,6 @@ IF: {signal_freq}kHz
# Create a sinewave waveform
fs = int(my_sdr.sample_rate)
print("sample_rate:", fs)
N = int(my_sdr.rx_buffer_size)
fc = int(signal_freq / (fs / N)) * (fs / N)
ts = 1 / float(fs)
@@ -165,7 +166,7 @@ my_sdr._ctx.set_timeout(0)
my_sdr.tx([iq * 0.5, iq]) # only send data to the 2nd channel (that's all we need)
c = 3e8
default_rf_bw = 500e6
default_chirp_bw = 500e6
N_frame = fft_size
freq = np.linspace(-fs / 2, fs / 2, int(N_frame))
slope = BW / ramp_time_s
@@ -179,23 +180,23 @@ class Window(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Interactive FFT")
self.setGeometry(100, 100, 800, 800) # (x,y, width, height)
self.setFixedWidth(1600)
self.setGeometry(0, 0, 400, 400) # (x,y, width, height)
#self.setFixedWidth(600)
self.setWindowState(QtCore.Qt.WindowMaximized)
self.num_rows = 12
self.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False) #remove the window's close button
self.UiComponents()
# showing all the widgets
self.show()
# method for components
def UiComponents(self):
widget = QWidget()
global layout
global layout, signal_freq, plot_freq
layout = QGridLayout()
# Control Panel
control_label = QLabel("PHASER Simple FMCW Radar")
control_label = QLabel("PHASER CFAR Targeting")
font = control_label.font()
font.setPointSize(24)
control_label.setFont(font)
@@ -217,18 +218,18 @@ class Window(QMainWindow):
self.cfar_check.stateChanged.connect(self.change_cfar)
layout.addWidget(self.cfar_check, 2, 1)
# RF bandwidth slider
# Chirp bandwidth slider
self.bw_slider = QSlider(Qt.Horizontal)
self.bw_slider.setMinimum(100)
self.bw_slider.setMaximum(500)
self.bw_slider.setValue(int(default_rf_bw / 1e6))
self.bw_slider.setValue(int(default_chirp_bw / 1e6))
self.bw_slider.setTickInterval(50)
self.bw_slider.setMaximumWidth(200)
self.bw_slider.setTickPosition(QSlider.TicksBelow)
self.bw_slider.valueChanged.connect(self.get_range_res)
layout.addWidget(self.bw_slider, 4, 0)
self.set_bw = QPushButton("Set RF Bandwidth")
self.set_bw = QPushButton("Set Chirp Bandwidth")
self.set_bw.setMaximumWidth(200)
self.set_bw.pressed.connect(self.set_range_res)
layout.addWidget(self.set_bw, 5, 0, 1, 1)
@@ -240,9 +241,9 @@ class Window(QMainWindow):
#CFAR Sliders
self.cfar_bias = QSlider(Qt.Horizontal)
self.cfar_bias.setMinimum(0)
self.cfar_bias.setMaximum(50)
self.cfar_bias.setValue(36)
self.cfar_bias.setTickInterval(2)
self.cfar_bias.setMaximum(100)
self.cfar_bias.setValue(40)
self.cfar_bias.setTickInterval(5)
self.cfar_bias.setMaximumWidth(200)
self.cfar_bias.setTickPosition(QSlider.TicksBelow)
self.cfar_bias.valueChanged.connect(self.get_cfar_values)
@@ -353,15 +354,15 @@ class Window(QMainWindow):
self.fft_plot = pg.plot()
self.fft_plot.setMinimumWidth(600)
self.fft_curve = self.fft_plot.plot(freq, pen={'color':'y', 'width':2})
self.fft_threshold = self.fft_plot.plot(freq, pen={'color':'r', 'width':8})
self.fft_threshold = self.fft_plot.plot(freq, pen={'color':'r', 'width':2})
title_style = {"size": "20pt"}
label_style = {"color": "#FFF", "font-size": "14pt"}
self.fft_plot.setLabel("bottom", text="Frequency", units="Hz", **label_style)
self.fft_plot.setLabel("left", text="Magnitude", units="dB", **label_style)
self.fft_plot.setTitle("Received Signal - Frequency Spectrum", **title_style)
layout.addWidget(self.fft_plot, 0, 2, self.num_rows, 1)
self.fft_plot.setYRange(-100, -20)
self.fft_plot.setXRange(100e3, 130e3)
self.fft_plot.setYRange(-60, 0)
self.fft_plot.setXRange(signal_freq, signal_freq+plot_freq)
# Waterfall plot
self.waterfall = pg.PlotWidget()
@@ -378,7 +379,7 @@ class Window(QMainWindow):
tr.translate(0,-sample_rate/2)
tr.scale(0.35, sample_rate / (N))
self.imageitem.setTransform(tr)
zoom_freq = 20e3
zoom_freq = 35e3
self.waterfall.setRange(yRange=(signal_freq, signal_freq + zoom_freq))
self.waterfall.setTitle("Waterfall Spectrum", **title_style)
self.waterfall.setLabel("left", "Frequency", units="Hz", **label_style)
@@ -391,7 +392,7 @@ class Window(QMainWindow):
self.setCentralWidget(widget)
def get_range_res(self):
""" Updates the slider bar label with RF bandwidth and range resolution
""" Updates the slider bar label with Chirp bandwidth and range resolution
Returns:
None
"""
@@ -408,8 +409,6 @@ class Window(QMainWindow):
self.cfar_ref_label.setText("Num Ref Cells: %0.0f" % (self.cfar_ref.value()))
def get_water_levels(self):
""" Updates the waterfall intensity levels
Returns:
@@ -437,11 +436,11 @@ class Window(QMainWindow):
my_phaser.set_beam_phase_diff(np.degrees(phase_delta))
def set_range_res(self):
""" Sets the RF bandwidth
""" Sets the Chirp bandwidth
Returns:
None
"""
global dist, slope
global dist, slope, signal_freq, plot_freq
bw = self.bw_slider.value() * 1e6
slope = bw / ramp_time_s
dist = (freq - signal_freq) * c / (4 * slope)

12
CW_RADAR_Waterfall.py
View File

@@ -34,7 +34,7 @@
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
'''CW Radar Demo with Phaser (CN0566)
Jon Kraft, Nov 19 2023'''
Jon Kraft, Jan 19 2024'''
# Imports
import adi
@@ -76,7 +76,7 @@ except:
my_phaser.gpios.gpio_vctrl_2 = 1 # 1=Send LO to transmit circuitry (0=disable Tx path, and send LO to LO_OUT)
sample_rate = 0.6e6
center_freq = 2.1e9
center_freq = 2.2e9
signal_freq = 100e3
num_slices = 50
fft_size = 1024 * 64
@@ -100,7 +100,7 @@ my_sdr.tx_hardwaregain_chan1 = -0 # must be between 0 and -88
# Configure the ADF4159 Rampling PLL
output_freq = 12.145e9
output_freq = 12.2e9
my_phaser.frequency = int(output_freq / 4) # Output frequency divided by 4
my_phaser.ramp_mode = "disabled" # ramp_mode can be: "disabled", "continuous_sawtooth", "continuous_triangular", "single_sawtooth_burst", "single_ramp_burst"
my_phaser.enable = 0 # 0 = PLL enable. Write this last to update all the registers
@@ -132,7 +132,6 @@ class Window(QMainWindow):
self.num_rows = 12
self.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False) #remove the window's close button
self.UiComponents()
# showing all the widgets
self.show()
# method for components
@@ -161,7 +160,7 @@ class Window(QMainWindow):
self.low_slider = QSlider(Qt.Horizontal)
self.low_slider.setMinimum(-100)
self.low_slider.setMaximum(0)
self.low_slider.setValue(-40)
self.low_slider.setValue(-66)
self.low_slider.setTickInterval(20)
self.low_slider.setMaximumWidth(200)
self.low_slider.setTickPosition(QSlider.TicksBelow)
@@ -171,7 +170,7 @@ class Window(QMainWindow):
self.high_slider = QSlider(Qt.Horizontal)
self.high_slider.setMinimum(-100)
self.high_slider.setMaximum(0)
self.high_slider.setValue(-28)
self.high_slider.setValue(-42)
self.high_slider.setTickInterval(20)
self.high_slider.setMaximumWidth(200)
self.high_slider.setTickPosition(QSlider.TicksBelow)
@@ -260,6 +259,7 @@ App = QApplication(sys.argv)
# create the instance of our Window
win = Window()
win.setWindowState(QtCore.Qt.WindowMaximized)
index = 0

66
FMCW_RADAR_Waterfall.py
View File

@@ -34,7 +34,7 @@
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
'''FMCW Radar Demo with Phaser (CN0566)
Jon Kraft, Nov 19 2023'''
Jon Kraft, Jan 20 2024'''
# Imports
import adi
@@ -78,8 +78,9 @@ except:
sample_rate = 0.6e6
center_freq = 2.1e9
signal_freq = 100e3
num_slices = 400
num_slices = 400 # this sets how much time will be displayed on the waterfall plot
fft_size = 1024 * 4
plot_freq = 100e3 # x-axis freq range to plot
img_array = np.ones((num_slices, fft_size))*(-100)
# Configure SDR Rx
@@ -101,9 +102,8 @@ my_sdr.tx_hardwaregain_chan1 = -0 # must be between 0 and -88
# Configure the ADF4159 Rampling PLL
output_freq = 12.145e9
BW = 500e6
num_steps = 1000
ramp_time = 1.2e3 # us
ramp_time_s = ramp_time / 1e6
num_steps = 500
ramp_time = 0.5e3 # us
my_phaser.frequency = int(output_freq / 4) # Output frequency divided by 4
my_phaser.freq_dev_range = int(
BW / 4
@@ -115,7 +115,9 @@ my_phaser.freq_dev_time = int(
ramp_time
) # total time (in us) of the complete frequency ramp
print("requested freq dev time = ", ramp_time)
print("actual freq dev time = ", my_phaser.freq_dev_time)
ramp_time = my_phaser.freq_dev_time
ramp_time_s = ramp_time / 1e6
print("actual freq dev time = ", ramp_time)
my_phaser.delay_word = 4095 # 12 bit delay word. 4095*PFD = 40.95 us. For sawtooth ramps, this is also the length of the Ramp_complete signal
my_phaser.delay_clk = "PFD" # can be 'PFD' or 'PFD*CLK1'
my_phaser.delay_start_en = 0 # delay start
@@ -150,7 +152,6 @@ IF: {signal_freq}kHz
# Create a sinewave waveform
fs = int(my_sdr.sample_rate)
print("sample_rate:", fs)
N = int(my_sdr.rx_buffer_size)
fc = int(signal_freq / (fs / N)) * (fs / N)
ts = 1 / float(fs)
@@ -164,7 +165,7 @@ my_sdr._ctx.set_timeout(0)
my_sdr.tx([iq * 0.5, iq]) # only send data to the 2nd channel (that's all we need)
c = 3e8
default_rf_bw = 500e6
default_chirp_bw = 500e6
N_frame = fft_size
freq = np.linspace(-fs / 2, fs / 2, int(N_frame))
slope = BW / ramp_time_s
@@ -177,19 +178,19 @@ class Window(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Interactive FFT")
self.setGeometry(100, 100, 800, 800) # (x,y, width, height)
self.setFixedWidth(1600)
self.setGeometry(0, 0, 400, 400) # (x,y, width, height)
#self.setFixedWidth(600)
self.setWindowState(QtCore.Qt.WindowMaximized)
self.num_rows = 12
self.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False) #remove the window's close button
self.UiComponents()
# showing all the widgets
self.show()
# method for components
def UiComponents(self):
widget = QWidget()
global layout
global layout, signal_freq
layout = QGridLayout()
# Control Panel
@@ -211,10 +212,10 @@ class Window(QMainWindow):
layout.addWidget(self.x_axis_check, 2, 0)
# Range resolution
# Changes with the RF BW slider
# Changes with the Chirp BW slider
self.range_res_label = QLabel(
"B<sub>RF</sub>: %0.2f MHz - R<sub>res</sub>: %0.2f m"
% (default_rf_bw / 1e6, c / (2 * default_rf_bw))
"B: %0.2f MHz - R<sub>res</sub>: %0.2f m"
% (default_chirp_bw / 1e6, c / (2 * default_chirp_bw))
)
font = self.range_res_label.font()
font.setPointSize(10)
@@ -224,18 +225,18 @@ class Window(QMainWindow):
self.range_res_label.setMinimumWidth(100)
layout.addWidget(self.range_res_label, 4, 1)
# RF bandwidth slider
# Chirp bandwidth slider
self.bw_slider = QSlider(Qt.Horizontal)
self.bw_slider.setMinimum(100)
self.bw_slider.setMaximum(500)
self.bw_slider.setValue(int(default_rf_bw / 1e6))
self.bw_slider.setValue(int(default_chirp_bw / 1e6))
self.bw_slider.setTickInterval(50)
self.bw_slider.setMaximumWidth(200)
self.bw_slider.setTickPosition(QSlider.TicksBelow)
self.bw_slider.valueChanged.connect(self.get_range_res)
layout.addWidget(self.bw_slider, 4, 0)
self.set_bw = QPushButton("Set RF Bandwidth")
self.set_bw = QPushButton("Set Chirp Bandwidth")
self.set_bw.setMaximumWidth(200)
self.set_bw.pressed.connect(self.set_range_res)
layout.addWidget(self.set_bw, 5, 0, 1, 1)
@@ -249,7 +250,7 @@ class Window(QMainWindow):
self.low_slider = QSlider(Qt.Horizontal)
self.low_slider.setMinimum(-100)
self.low_slider.setMaximum(0)
self.low_slider.setValue(-43)
self.low_slider.setValue(-40)
self.low_slider.setTickInterval(20)
self.low_slider.setMaximumWidth(200)
self.low_slider.setTickPosition(QSlider.TicksBelow)
@@ -259,7 +260,7 @@ class Window(QMainWindow):
self.high_slider = QSlider(Qt.Horizontal)
self.high_slider.setMinimum(-100)
self.high_slider.setMaximum(0)
self.high_slider.setValue(-23)
self.high_slider.setValue(-5)
self.high_slider.setTickInterval(20)
self.high_slider.setMaximumWidth(200)
self.high_slider.setTickPosition(QSlider.TicksBelow)
@@ -318,7 +319,7 @@ class Window(QMainWindow):
self.fft_plot.setTitle("Received Signal - Frequency Spectrum", **title_style)
layout.addWidget(self.fft_plot, 0, 2, self.num_rows, 1)
self.fft_plot.setYRange(-60, 0)
self.fft_plot.setXRange(100e3, 200e3)
self.fft_plot.setXRange(signal_freq, signal_freq+plot_freq)
# Waterfall plot
self.waterfall = pg.PlotWidget()
@@ -335,7 +336,7 @@ class Window(QMainWindow):
tr.translate(0,-sample_rate/2)
tr.scale(0.35, sample_rate / (N))
self.imageitem.setTransform(tr)
zoom_freq = 20e3
zoom_freq = 35e3
self.waterfall.setRange(yRange=(signal_freq, signal_freq + zoom_freq))
self.waterfall.setTitle("Waterfall Spectrum", **title_style)
self.waterfall.setLabel("left", "Frequency", units="Hz", **label_style)
@@ -355,7 +356,7 @@ class Window(QMainWindow):
bw = self.bw_slider.value() * 1e6
range_res = c / (2 * bw)
self.range_res_label.setText(
"B<sub>RF</sub>: %0.2f MHz - R<sub>res</sub>: %0.2f m"
"B: %0.2f MHz - R<sub>res</sub>: %0.2f m"
% (bw / 1e6, c / (2 * bw))
)
@@ -386,24 +387,21 @@ class Window(QMainWindow):
my_phaser.set_beam_phase_diff(np.degrees(phase_delta))
def set_range_res(self):
""" Sets the RF bandwidth
""" Sets the Chirp bandwidth
Returns:
None
"""
global dist, slope
global dist, slope, signal_freq, plot_freq
bw = self.bw_slider.value() * 1e6
slope = bw / ramp_time_s
dist = (freq - signal_freq) * c / (4 * slope)
print("New slope: %0.2fMHz/s" % (slope / 1e6))
if self.x_axis_check.isChecked() == True:
print("Range axis")
plot_dist = True
range_x = (100e3) * c / (4 * slope)
range_x = (plot_freq) * c / (4 * slope)
self.fft_plot.setXRange(0, range_x)
else:
print("Frequency axis")
plot_dist = False
self.fft_plot.setXRange(100e3, 140e3)
self.fft_plot.setXRange(signal_freq, signal_freq+plot_freq)
my_phaser.freq_dev_range = int(bw / 4) # frequency deviation range in Hz
my_phaser.enable = 0
@@ -422,17 +420,15 @@ class Window(QMainWindow):
Returns:
None
"""
global plot_dist, slope
global plot_dist, slope, signal_freq, plot_freq
plot_state = win.fft_plot.getViewBox().state
if state == QtCore.Qt.Checked:
print("Range axis")
plot_dist = True
range_x = (100e3) * c / (4 * slope)
range_x = (plot_freq) * c / (4 * slope)
self.fft_plot.setXRange(0, range_x)
else:
print("Frequency axis")
plot_dist = False
self.fft_plot.setXRange(100e3, 200e3)
self.fft_plot.setXRange(signal_freq, signal_freq+plot_freq)
# create pyqt5 app

82
Range_Doppler_Plot.py
View File

@@ -32,21 +32,31 @@
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
'''This script uses the new Pluto TDD engine
As of Nov 2023, this is in the "dev_phaser_merge" branch of https://github.com/analogdevicesinc/pyadi-iio
Also, make sure your Pluto firmware is updated to rev 0.38 (or later)
To view the plot properly in Spyder, select Tools->Preferences, IPython Console, and change Graphics backend from Inline to Automatic
'''
'''FMCW Range Doppler Demo with Phaser (CN0566)
Jon Kraft, Jan 20 2024'''
# Imports
import adi
import sys
import matplotlib
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation
import numpy as np
import time
'''This script uses the new Pluto TDD engine
As of Jan 2024, this is in the "dev_phaser_merge" branch of https://github.com/analogdevicesinc/pyadi-iio
Also, make sure your Pluto firmware is updated to rev 0.38 (or later)
'''
#sys.path.insert(0,'/home/analog/cn0566_merge/pyadi-iio/')
import adi
print(adi.__version__)
# Parameters
sample_rate = 5e6
center_freq = 2.1e9
signal_freq = int(sample_rate/10)
ramp_time = 200 # us
num_chirps = 128
# Instantiate all the Devices
rpi_ip = "ip:phaser.local" # IP address of the Raspberry Pi
sdr_ip = "ip:192.168.2.1" # "192.168.2.1, or pluto.local" # IP address of the Transceiver Block
@@ -74,11 +84,6 @@ except:
my_phaser.gpios.gpio_vctrl_1 = 1 # 1=Use onboard PLL/LO source (0=disable PLL and VCO, and set switch to use external LO input)
my_phaser.gpios.gpio_vctrl_2 = 1 # 1=Send LO to transmit circuitry (0=disable Tx path, and send LO to LO_OUT)
# Parameters
sample_rate = 20e6
center_freq = 2.1e9
signal_freq = 0.1e6
# Configure SDR Rx
my_sdr.sample_rate = int(sample_rate)
my_sdr.rx_lo = int(center_freq) # set this to output_freq - (the freq of the HB100)
@@ -100,8 +105,7 @@ print("RX LO %s" % (my_sdr.rx_lo))
# Configure the ADF4159 Rampling PLL
output_freq = 12.145e9
BW = 500e6
num_steps = 200
ramp_time = 0.2e3 # us
num_steps = ramp_time # in general it works best if there is 1 step per us
my_phaser.frequency = int(output_freq / 4) # Output frequency divided by 4
my_phaser.freq_dev_range = int(
BW / 4
@@ -137,7 +141,7 @@ tdd.enable = False # disable TDD to configure the registers
tdd.sync_external = True
tdd.startup_delay_ms = 1
tdd.frame_length_ms = ramp_time/1e3 + 0.2 # each GPIO toggle is spaced this far apart
tdd.burst_count = 128 # number of chirps in one continuous receive buffer
tdd.burst_count = num_chirps # number of chirps in one continuous receive buffer
tdd.out_channel0_enable = True
tdd.out_channel0_polarity = False
@@ -219,7 +223,7 @@ start_offset_samples = int((start_offset_time+begin_offset_time)*fs)
# %%
range_doppler_fig, ax = plt.subplots(figsize=(16, 16))
range_doppler_fig, ax = plt.subplots(figsize=(14, 7))
extent = [-max_doppler_vel, max_doppler_vel, dist.min(), dist.max()]
@@ -247,7 +251,7 @@ rx_bursts_fft = np.fft.fftshift(abs(np.fft.fft2(rx_bursts)))
# %%
i = 0
cmn = ''
def get_radar_data(frame):
def get_radar_data():
global range_doppler
# Collect data
my_phaser.gpios.gpio_burst = 0
@@ -267,35 +271,45 @@ def get_radar_data(frame):
rx_bursts[burst] = sum_data[start_index:stop_index]
rx_bursts_fft = np.fft.fftshift(abs(np.fft.fft2(rx_bursts)))
range_doppler.set_data(np.log10(rx_bursts_fft).T)
return [range_doppler]
range_doppler_data = np.log10(rx_bursts_fft).T
plot_data = range_doppler_data
#plot_data = np.clip(plot_data, 0, 6) # clip the data to control the max spectrogram scale
return plot_data
# %%
plot_data = np.log10(rx_bursts_fft).T
#plot_data = np.clip(plot_data, 0, 6) # clip the data to control the max spectrogram scale
cmaps = ['inferno', 'plasma']
cmn = cmaps[0]
plot_data = np.log10(rx_bursts_fft).T
plot_data = np.clip(plot_data, 0, 6)
range_doppler = ax.imshow(plot_data, aspect='auto',
extent=extent, origin='lower', cmap=matplotlib.colormaps.get_cmap(cmn),
)
try:
range_doppler = ax.imshow(plot_data, aspect='auto',
extent=extent, origin='lower', cmap=matplotlib.colormaps.get_cmap(cmn),
)
except:
print("Using an older version of MatPlotLIB")
from matplotlib.cm import get_cmap
range_doppler = ax.imshow(plot_data, aspect='auto', vmin=0, vmax=8,
extent=extent, origin='lower', cmap=get_cmap(cmn),
)
ax.set_title('Range Doppler Spectrum', fontsize=24)
ax.set_xlabel('Velocity [m/s]', fontsize=22)
ax.set_ylabel('Range [m]', fontsize=22)
max_range = 40
ax.set_xlim([-15, 15])
max_range = 10
ax.set_xlim([-6, 6])
ax.set_ylim([0, max_range])
ax.set_yticks(np.arange(0, max_range, 4))
ax.set_yticks(np.arange(2, max_range, 2))
plt.xticks(fontsize=20)
plt.yticks(fontsize=20)
print("Press CTRL+C to stop the loop")
print("sample_rate = ", sample_rate/1e6, "MHz, ramp_time = ", ramp_time, "us, num_chirps = ", num_chirps)
print("CTRL + c to stop the loop")
try:
while True:
FuncAnimation(range_doppler_fig, get_radar_data, blit=True, frames=1, repeat=False)
plt.show()
plot_data = get_radar_data()
range_doppler.set_data(plot_data)
plt.show(block=False)
plt.pause(.1)
except KeyboardInterrupt: # press ctrl-c to stop the loop
pass