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@ -1138,17 +1138,17 @@ if __name__ == "__main__":
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start_time = time.perf_counter()
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tx_doppler_start_hz = txrf * 1e6
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tx_doppler_shift_hz = 0
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print(tx_doppler_start_hz)
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print(f"Tx center frequency: {tx_doppler_start_hz}")
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rx_doppler_start_hz = rxf * 1e6
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rx_doppler_shift_hz = 0
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print(rx_doppler_start_hz)
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print(f"Rx center frequency: {rx_doppler_start_hz}")
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TARGET_PASS = 85 # Maximum elevation profile
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PASS_START_TIME = -180 # The absolute time index where the pass begins
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TIME_FROM_START = 30 # 30 seconds into the pass
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# PASS_START_TIME = -180 # The absolute time index where the pass begins
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# TIME_FROM_START = 30 # 30 seconds into the pass
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# Map the "time from start" to the "relative time index" used in the table
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relative_time_index = PASS_START_TIME + TIME_FROM_START
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# relative_time_index = PASS_START_TIME + TIME_FROM_START
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index = int(10/10)
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try:
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@ -1159,9 +1159,9 @@ if __name__ == "__main__":
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doppler_table = iss_doppler_passes[TARGET_PASS]
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third_row = iss_doppler_passes[TARGET_PASS][index]
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print("Full Third:")
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print(third_row)
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print("\n" + "="*40 + "\n")
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# print("Full Third:")
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# print(third_row)
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# print("\n" + "="*40 + "\n")
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time_index = third_row["time_sec"]
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doppler_shift = third_row["doppler_434_khz"]
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@ -1170,8 +1170,8 @@ if __name__ == "__main__":
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print(f"Pass Elevation: {TARGET_PASS}°")
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# print(f"Time Index: {TIME_FROM_START} seconds from start (Relative: {relative_time_index}s)")
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print(f"Time Index: {index}")
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print(f"Extracted Doppler Shift (434.9 MHz): {doppler_shift} kHz")
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print(f"UHF frequency (434.9 MHz): {uhf_freq} MHz")
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print(f"Extracted Doppler Shift (435.0 MHz): {doppler_shift} kHz")
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print(f"UHF frequency (435.0 MHz): {uhf_freq} MHz")
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except KeyError:
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print("Error: The requested pass elevation or time index does not exist in the database.")
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@ -1179,7 +1179,7 @@ if __name__ == "__main__":
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while True:
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if (input(squelch) == False) and (command_tx == True):
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relative_time = time.perf_counter() - start_time
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relative_time = (time.perf_counter() - start_time) % 370
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index = int(relative_time/10)
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table_row = doppler_table[index]
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rx_doppler_shift_hz = table_row["doppler_434_khz"] * 1000
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@ -1190,7 +1190,7 @@ if __name__ == "__main__":
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print(f"Tx Doppler shift: {tx_doppler_freq_hz}")
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txr = "{:.3f}".format(tx_doppler_freq_hz/1000)
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print(txr)
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rx_doppler_freq_hz = rx_doppler_start_hz + tx_doppler_shift_hz
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rx_doppler_freq_hz = rx_doppler_start_hz + rx_doppler_shift_hz
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print(f"Rx Doppler shift: {rx_doppler_freq_hz}")
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rx = "{:.4f}".format(rx_doppler_freq_hz/1e6)
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# print(rx)
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