mirror of https://github.com/gnss-sdr/gnss-sdr
141 lines
5.4 KiB
Matlab
141 lines
5.4 KiB
Matlab
function plotTracking(channelList, trackResults, settings)
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% This function plots the tracking results for the given channel list.
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%
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% plotTracking(channelList, trackResults, settings)
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%
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% Inputs:
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% channelList - list of channels to be plotted.
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% trackResults - tracking results from the tracking function.
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% settings - receiver settings.
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%--------------------------------------------------------------------------
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% SoftGNSS v3.0
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%
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% Written by Darius Plausinaitis
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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: Darius Plausinaitis
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% SPDX-License-Identifier: GPL-3.0-or-later
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%--------------------------------------------------------------------------
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% Protection - if the list contains incorrect channel numbers
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channelList = intersect(channelList, 1:settings.numberOfChannels);
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%=== For all listed channels ==============================================
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for channelNr = channelList
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%% Select (or create) and clear the figure ================================
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% The number 200 is added just for more convenient handling of the open
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% figure windows, when many figures are closed and reopened.
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% Figures drawn or opened by the user, will not be "overwritten" by
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% this function.
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figure(channelNr +200);
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clf(channelNr +200);
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set(channelNr +200, 'Name', ['Channel ', num2str(channelNr), ...
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' (PRN ', ...
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num2str(trackResults(channelNr).PRN), ...
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') results']);
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%% Draw axes ==============================================================
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% Row 1
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handles(1, 1) = subplot(3, 3, 1);
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handles(1, 2) = subplot(3, 3, [2 3]);
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% Row 2
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handles(2, 1) = subplot(3, 3, 4);
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handles(2, 2) = subplot(3, 3, [5 6]);
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% Row 3
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handles(3, 1) = subplot(3, 3, 7);
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handles(3, 2) = subplot(3, 3, 8);
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handles(3, 3) = subplot(3, 3, 9);
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%% Plot all figures =======================================================
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timeAxisInSeconds = (1:settings.msToProcess-1)/1000;
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%----- Discrete-Time Scatter Plot ---------------------------------
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plot(handles(1, 1), trackResults(channelNr).I_PN,...
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trackResults(channelNr).Q_PN, ...
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'.');
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grid (handles(1, 1));
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axis (handles(1, 1), 'equal');
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title (handles(1, 1), 'Discrete-Time Scatter Plot');
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xlabel(handles(1, 1), 'I prompt');
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ylabel(handles(1, 1), 'Q prompt');
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%----- Nav bits ---------------------------------------------------
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plot (handles(1, 2), timeAxisInSeconds, ...
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trackResults(channelNr).I_PN(1:settings.msToProcess-1));
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grid (handles(1, 2));
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title (handles(1, 2), 'Bits of the navigation message');
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xlabel(handles(1, 2), 'Time (s)');
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axis (handles(1, 2), 'tight');
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%----- PLL discriminator unfiltered--------------------------------
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plot (handles(2, 1), timeAxisInSeconds, ...
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trackResults(channelNr).pllDiscr(1:settings.msToProcess-1), 'r');
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grid (handles(2, 1));
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axis (handles(2, 1), 'tight');
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xlabel(handles(2, 1), 'Time (s)');
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ylabel(handles(2, 1), 'Amplitude');
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title (handles(2, 1), 'Raw PLL discriminator');
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%----- Correlation ------------------------------------------------
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plot(handles(2, 2), timeAxisInSeconds, ...
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[sqrt(trackResults(channelNr).I_E(1:settings.msToProcess-1).^2 + ...
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trackResults(channelNr).Q_E(1:settings.msToProcess-1).^2)', ...
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sqrt(trackResults(channelNr).I_P(1:settings.msToProcess-1).^2 + ...
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trackResults(channelNr).Q_P(1:settings.msToProcess-1).^2)', ...
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sqrt(trackResults(channelNr).I_L(1:settings.msToProcess-1).^2 + ...
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trackResults(channelNr).Q_L(1:settings.msToProcess-1).^2)'], ...
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'-*');
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grid (handles(2, 2));
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title (handles(2, 2), 'Correlation results');
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xlabel(handles(2, 2), 'Time (s)');
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axis (handles(2, 2), 'tight');
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hLegend = legend(handles(2, 2), '$\sqrt{I_{E}^2 + Q_{E}^2}$', ...
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'$\sqrt{I_{P}^2 + Q_{P}^2}$', ...
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'$\sqrt{I_{L}^2 + Q_{L}^2}$');
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%set interpreter from tex to latex. This will draw \sqrt correctly
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set(hLegend, 'Interpreter', 'Latex');
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%----- PLL discriminator filtered----------------------------------
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plot (handles(3, 1), timeAxisInSeconds, ...
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trackResults(channelNr).pllDiscrFilt(1:settings.msToProcess-1), 'b');
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grid (handles(3, 1));
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axis (handles(3, 1), 'tight');
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xlabel(handles(3, 1), 'Time (s)');
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ylabel(handles(3, 1), 'Amplitude');
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title (handles(3, 1), 'Filtered PLL discriminator');
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%----- DLL discriminator unfiltered--------------------------------
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plot (handles(3, 2), timeAxisInSeconds, ...
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trackResults(channelNr).dllDiscr(1:settings.msToProcess-1), 'r');
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grid (handles(3, 2));
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axis (handles(3, 2), 'tight');
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xlabel(handles(3, 2), 'Time (s)');
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ylabel(handles(3, 2), 'Amplitude');
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title (handles(3, 2), 'Raw DLL discriminator');
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%----- DLL discriminator filtered----------------------------------
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plot (handles(3, 3), timeAxisInSeconds, ...
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trackResults(channelNr).dllDiscrFilt(1:settings.msToProcess-1), 'b');
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grid (handles(3, 3));
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axis (handles(3, 3), 'tight');
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xlabel(handles(3, 3), 'Time (s)');
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ylabel(handles(3, 3), 'Amplitude');
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title (handles(3, 3), 'Filtered DLL discriminator');
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end % for channelNr = channelList
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