mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-11-15 06:14:58 +00:00
113 lines
3.9 KiB
Python
113 lines
3.9 KiB
Python
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"""
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read_hybrid_observables_dump.py
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This function plots the tracking results for the given channel list.
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Irene Pérez Riega, 2023. iperrie@inta.es
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read_hybrid_observables_dump(channels, filename)
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Args:
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channels - list of channels to be processed
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filename - path to the observables file
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-----------------------------------------------------------------------------
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GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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This file is part of GNSS-SDR.
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Copyright (C) 2022 (see AUTHORS file for a list of contributors)
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SPDX-License-Identifier: GPL-3.0-or-later
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-----------------------------------------------------------------------------
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"""
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import struct
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def read_hybrid_observables_dump(channels, filename):
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double_size_bytes = 8
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bytes_shift = 0
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RX_time = [[] for _ in range(channels+1)]
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d_TOW_at_current_symbol = [[] for _ in range(channels+1)]
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Carrier_Doppler_hz = [[] for _ in range(channels+1)]
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Carrier_phase_hz = [[] for _ in range(channels+1)]
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Pseudorange_m = [[] for _ in range(channels+1)]
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PRN = [[] for _ in range(channels+1)]
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valid = [[] for _ in range(channels+1)]
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f = open(filename, 'rb')
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if f is None:
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return None
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else:
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while True:
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try:
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# There is an empty channel at the end (Channel-6)
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for N in range(0, channels+1):
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f.seek(bytes_shift, 0)
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RX_time[N].append(struct.unpack(
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'd',f.read(double_size_bytes))[0])
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bytes_shift += double_size_bytes
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f.seek(bytes_shift, 0)
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d_TOW_at_current_symbol[N].append(struct.unpack(
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'd', f.read(double_size_bytes))[0])
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bytes_shift += double_size_bytes
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f.seek(bytes_shift, 0)
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Carrier_Doppler_hz[N].append(struct.unpack(
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'd', f.read(double_size_bytes))[0])
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bytes_shift += double_size_bytes
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f.seek(bytes_shift, 0)
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Carrier_phase_hz[N].append(struct.unpack(
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'd', f.read(double_size_bytes))[0])
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bytes_shift += double_size_bytes
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f.seek(bytes_shift, 0)
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Pseudorange_m[N].append(struct.unpack(
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'd', f.read(double_size_bytes))[0])
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bytes_shift += double_size_bytes
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f.seek(bytes_shift, 0)
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PRN[N].append(struct.unpack(
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'd', f.read(double_size_bytes))[0])
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bytes_shift += double_size_bytes
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f.seek(bytes_shift, 0)
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valid[N].append(struct.unpack(
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'd', f.read(double_size_bytes))[0])
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bytes_shift += double_size_bytes
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f.seek(bytes_shift, 0)
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except:
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break
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# Delete last Channel:
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RX_time = [row for i, row in enumerate(RX_time) if i != 5]
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d_TOW_at_current_symbol = [row for i, row in enumerate(
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d_TOW_at_current_symbol)if i != 5]
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Carrier_Doppler_hz = [row for i, row in enumerate(
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Carrier_Doppler_hz) if i != 5]
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Carrier_phase_hz = [row for i, row in enumerate(
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Carrier_phase_hz) if i != 5]
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Pseudorange_m = [row for i, row in enumerate(Pseudorange_m) if i != 5]
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PRN = [row for i, row in enumerate(PRN) if i != 5]
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valid = [row for i, row in enumerate(valid) if i != 5]
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observables = {
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'RX_time': RX_time,
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'd_TOW_at_current_symbol': d_TOW_at_current_symbol,
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'Carrier_Doppler_hz': Carrier_Doppler_hz,
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'Carrier_phase_hz': Carrier_phase_hz,
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'Pseudorange_m': Pseudorange_m,
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'PRN': PRN,
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'valid':valid
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}
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f.close()
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return observables
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