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https://github.com/gnss-sdr/gnss-sdr
synced 2024-11-15 14:25:00 +00:00
78 lines
3.5 KiB
Matlab
78 lines
3.5 KiB
Matlab
% Opens GNSS-SDR tracking binary log file .dat and returns the contents
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%
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% -------------------------------------------------------------------------
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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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%
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% SPDX-FileCopyrightText: Javier Arribas 2011
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% SPDX-License-Identifier: GPL-3.0-or-later
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%
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% -------------------------------------------------------------------------
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function [observables] = read_hybrid_observables_dump (channels, filename, count)
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m = nargchk (1,2,nargin);
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num_double_vars=7;
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double_size_bytes=8;
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skip_bytes_each_read=double_size_bytes*num_double_vars*channels;
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bytes_shift=0;
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if (m)
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usage (m);
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end
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if (nargin < 3)
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count = Inf;
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end
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%loops_counter = fread (f, count, 'uint32',4*12);
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f = fopen (filename, 'rb');
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if (f < 0)
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else
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for N=1:1:channels
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observables.RX_time(N,:) = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
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bytes_shift=bytes_shift+double_size_bytes;
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fseek(f,bytes_shift,'bof'); % move to next interleaved
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observables.d_TOW_at_current_symbol(N,:) = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
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bytes_shift=bytes_shift+double_size_bytes;
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fseek(f,bytes_shift,'bof'); % move to next interleaved
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observables.Carrier_Doppler_hz(N,:) = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
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bytes_shift=bytes_shift+double_size_bytes;
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fseek(f,bytes_shift,'bof'); % move to next interleaved
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observables.Carrier_phase_hz(N,:) = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
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bytes_shift=bytes_shift+double_size_bytes;
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fseek(f,bytes_shift,'bof'); % move to next interleaved
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observables.Pseudorange_m(N,:) = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
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bytes_shift=bytes_shift+double_size_bytes;
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fseek(f,bytes_shift,'bof'); % move to next interleaved
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observables.PRN(N,:) = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
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bytes_shift=bytes_shift+double_size_bytes;
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fseek(f,bytes_shift,'bof'); % move to next interleaved
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observables.valid(N,:) = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
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bytes_shift=bytes_shift+double_size_bytes;
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fseek(f,bytes_shift,'bof'); % move to next interleaved
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end
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fclose (f);
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%%%%%%%% output vars %%%%%%%%
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% double tmp_double;
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% for (unsigned int i = 0; i < d_nchannels; i++)
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% {
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% tmp_double = current_gnss_synchro[i].RX_time;
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% d_dump_file.write((char*)&tmp_double, sizeof(double));
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% tmp_double = current_gnss_synchro[i].TOW_at_current_symbol_ms;
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% d_dump_file.write((char*)&tmp_double, sizeof(double));
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% tmp_double = current_gnss_synchro[i].Carrier_Doppler_hz;
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% d_dump_file.write((char*)&tmp_double, sizeof(double));
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% tmp_double = current_gnss_synchro[i].Carrier_phase_rads/GPS_TWO_PI;
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% d_dump_file.write((char*)&tmp_double, sizeof(double));
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% tmp_double = current_gnss_synchro[i].Pseudorange_m;
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% d_dump_file.write((char*)&tmp_double, sizeof(double));
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% tmp_double = current_gnss_synchro[i].PRN;
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% d_dump_file.write((char*)&tmp_double, sizeof(double));
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% tmp_double = current_gnss_synchro[i].Flag_valid_pseudorange;
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% d_dump_file.write((char*)&tmp_double, sizeof(double));
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% }
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end
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