bkiedinger/castelion_radar_alinx_kintex
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updates

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This commit is contained in:
bkiedinger@gmail.com
2025-05-20 20:33:12 -05:00
parent 8a1a6ea770
commit fcb291590b
104 changed files with 63299 additions and 45045 deletions
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44
python/test_cpi.py
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@@ -28,15 +28,29 @@ def db20n(x):
def main():
print('Hello')
clk = 187.5e6
radar = radar_manager.RadarManager()
clk = radar_manager.TIMING_ENGINE_FREQ
freqs = np.array([16, 21, 13, 3.25, 3.5, 5, 2])*1e9
pri_lsb = 16e-9
print(freqs * pri_lsb)
# Test AD9081 Reg Access
print(hex(radar.ad9081_read_reg(0x0A0A)))
radar.ad9081_write_reg(0x0A0A, 0x60)
print(hex(radar.ad9081_read_reg(0x0A0A)))
# CPI Parameters (timing values are in clk ticks)
num_pulses = 128
num_samples = 8192
start_sample = 0
# Should be multiple of udp packet size, currently 4096 bytes, or 1024 samples
num_samples = 5000
start_sample = 2000
tx_num_samples = 1024
tx_start_sample = start_sample
pri = int(.001 * clk)
pri = int(.0004 * clk)
print(pri)
inter_cpi = 50
tx_lo_offset = 10e6
rx_lo_offset = 0
@@ -46,7 +60,7 @@ def main():
print('PRI', pri_float, 'PRF', 1 / pri_float)
print('Expected Data Rate', num_samples * 4 / pri_float / 1e6)
radar = radar_manager.RadarManager()
recorder0 = DataRecorder("192.168.2.128", 1234, packet_size=radar.packet_size)
recorder1 = DataRecorder("192.168.3.128", 1235, packet_size=radar.packet_size)
@@ -59,7 +73,7 @@ def main():
print('Start Running')
radar.start_running()
# Let it run for a bit
time.sleep(5)
time.sleep(2)
# Stop running
radar.stop_running()
# Stop the data recorder
@@ -84,12 +98,14 @@ def main():
else:
offset += 4
num_cpi = 16
num_cpi = 1
for i in range(num_cpi):
# Get Header
data = plot_recorder.buffer[offset:offset + ctypes.sizeof(data_structures.CpiHeader)]
offset += ctypes.sizeof(data_structures.CpiHeader)
headers.append(data_structures.CpiHeader.from_buffer_copy(data))
num_pulses = headers[i].num_pulses
num_samples = headers[i].num_samples
# Get CPI
data_size = num_pulses * num_samples * 4
@@ -117,15 +133,21 @@ def main():
vmin = -60
vmax = 0
fid, axs = plt.subplots(2)
axs[0].plot(iq.T.real, '.-')
axs[0].plot(iq.T.imag, '--.')
fid, axs = plt.subplots(3)
axs[0].plot(iq.T.real, '-')
axs[0].plot(iq.T.imag, '--')
axs[0].grid()
axs[1].imshow(db20n(iq), aspect='auto', interpolation='nearest', vmin=vmin, vmax=vmax)
# axs[1].imshow(db20n(iq), aspect='auto', interpolation='nearest', vmin=vmin, vmax=vmax)
axs[1].imshow(iq.real, aspect='auto', interpolation='nearest')
axs[1].set_ylabel('Pulse Count')
axs[1].set_xlabel('Sample Count')
iq_freq = np.fft.fftshift(np.fft.fft(iq, axis=1), axes=1)
freq_axis = (np.arange(num_samples)/num_samples - 0.5) * radar_manager.BASEBAND_SAMPLE_RATE / 1e6
axs[2].plot(freq_axis, db20n(iq_freq.T))
axs[2].grid()
plt.show()