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https://github.com/gnss-sdr/gnss-sdr
synced 2025-01-23 07:27:05 +00:00
75 lines
3.1 KiB
Matlab
75 lines
3.1 KiB
Matlab
% Usage: read_true_sim_observables_dump (filename, [count])
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%
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% Opens gnss-sdr-sim observables dump and reads all chennels
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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_true_sim_observables_dump (filename, count)
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m = nargchk (1,2,nargin);
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channels=12; %Simulator always use 12 channels
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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 < 2)
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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.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.True_range_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.Carrier_phase_hz_v2(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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end
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fclose (f);
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% %%%%%%%% output vars %%%%%%%%
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% for(int i=0;i<12;i++)
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% {
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% d_dump_file.read((char *) &gps_time_sec[i], sizeof(double));
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% d_dump_file.read((char *) &doppler_l1_hz, sizeof(double));
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% d_dump_file.read((char *) &acc_carrier_phase_l1_cycles[i], sizeof(double));
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% d_dump_file.read((char *) &dist_m[i], sizeof(double));
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% d_dump_file.read((char *) &true_dist_m[i], sizeof(double));
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% d_dump_file.read((char *) &carrier_phase_l1_cycles[i], sizeof(double));
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% d_dump_file.read((char *) &prn[i], sizeof(double));
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% }
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end
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