mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-06-13 16:56:52 +00:00
83 lines
3.3 KiB
Mathematica
83 lines
3.3 KiB
Mathematica
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% /*!
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% * \file gps_l1_ca_dll_pll_plot_sample.m
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% * \brief Read GNSS-SDR Tracking dump binary file using the provided
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% function and plot some internal variables
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% * \author Javier Arribas, 2011. jarribas(at)cttc.es
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% * -------------------------------------------------------------------------
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% *
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% * Copyright (C) 2010-2011 (see AUTHORS file for a list of contributors)
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% *
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% * GNSS-SDR is a software defined Global Navigation
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% * Satellite Systems receiver
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% *
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% * This file is part of GNSS-SDR.
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% *
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% * GNSS-SDR is free software: you can redistribute it and/or modify
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% * it under the terms of the GNU General Public License as published by
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% * the Free Software Foundation, either version 3 of the License, or
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% * at your option) any later version.
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% *
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% * GNSS-SDR is distributed in the hope that it will be useful,
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% * but WITHOUT ANY WARRANTY; without even the implied warranty of
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% * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% * GNU General Public License for more details.
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% *
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% * You should have received a copy of the GNU General Public License
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% * along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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% *
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% * -------------------------------------------------------------------------
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% */
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close all;
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clear all;
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samplingFreq = 64e6/16; %[Hz]
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channels=6;
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path='/home/javier/workspace/gnss-sdr/trunk/install/';
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clear PRN_absolute_sample_start;
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for N=1:1:channels
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tracking_log_path=[path 'tracking_ch_' num2str(N-1) '.dat'];
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GNSS_tracking(N)= gps_l1_ca_dll_pll_read_tracking_dump(tracking_log_path);
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end
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% GNSS-SDR format conversion to MATLAB GPS receiver
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for N=1:1:channels
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trackResults(N).status='T'; %fake track
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trackResults(N).codeFreq=GNSS_tracking(N).code_freq_hz.';
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trackResults(N).carrFreq=GNSS_tracking(N).carrier_doppler_hz.';
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trackResults(N).dllDiscr = GNSS_tracking(N).code_error.';
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trackResults(N).dllDiscrFilt = GNSS_tracking(N).code_nco.';
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trackResults(N).pllDiscr = GNSS_tracking(N).carr_error.';
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trackResults(N).pllDiscrFilt = GNSS_tracking(N).carr_nco.';
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trackResults(N).I_P=GNSS_tracking(N).prompt_I.';
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trackResults(N).Q_P=GNSS_tracking(N).prompt_Q.';
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trackResults(N).I_E= GNSS_tracking(N).E.';
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trackResults(N).I_L = GNSS_tracking(N).L.';
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trackResults(N).Q_E = zeros(1,length(GNSS_tracking(N).E));
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trackResults(N).Q_L =zeros(1,length(GNSS_tracking(N).E));
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trackResults(N).PRN=N; %fake PRN
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% Use original MATLAB tracking plot function
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settings.numberOfChannels=channels;
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settings.msToProcess=length(GNSS_tracking(N).E);
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plotTracking(N,trackResults,settings)
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end
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% for N=1:1:channels
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% figure;
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% plot([GNSS_tracking(N).E,GNSS_tracking(N).P,GNSS_tracking(N).L],'-*');
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% title(['Early, Prompt, and Late correlator absolute value output for channel ' num2str(N)']);
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% figure;
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% plot(GNSS_tracking(N).prompt_I,GNSS_tracking(N).prompt_Q,'+');
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% title(['Navigation constellation plot for channel ' num2str(N)]);
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% figure;
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%
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% plot(GNSS_tracking(N).prompt_Q,'r');
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% hold on;
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% plot(GNSS_tracking(N).prompt_I);
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% title(['Navigation symbols I(red) Q(blue) for channel ' num2str(N)]);
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% end
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