111 lines
5.2 KiB
Matlab
111 lines
5.2 KiB
Matlab
function settings = initSettings_IQ()
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%Functions initializes and saves settings. Settings can be edited inside of
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%the function, updated from the command line or updated using a dedicated
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%GUI - "setSettings".
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%
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%All settings are described inside function code.r
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%
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%settings = initSettings()
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%
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% Inputs: none
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%
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% Outputs:
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% settings - Receiver settings (a structure).
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%--------------------------------------------------------------------------
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% SoftGNSS v3.0
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%
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% Copyright (C) Darius Plausinaitis
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% Written by Darius Plausinaitis
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%--------------------------------------------------------------------------
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%This program is free software; you can redistribute it and/or
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%modify it under the terms of the GNU General Public License
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%as published by the Free Software Foundation; either version 2
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%of the License, or (at your option) any later version.
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%
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%This program 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 this program; if not, write to the Free Software
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%Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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%USA.
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%--------------------------------------------------------------------------
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%% Optional Parameters
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% Number of milliseconds to be processed used 36000 + any transients (see
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% below - in Nav parameters) to ensure nav subframes are provided
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settings.msToProcess = 5*1e3; %[ms]
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% Move the starting point of processing.
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settings.skipNumberOfBytes = 0*2.046e9; %0*2.046e6; %0*2.046e6;%1.5*4.092e6*2; % settings.samplingFreq;%13169313;%settings.samplingFreq/5*4;%+16e3*50;%16e3*100.;
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% The notch bandwidth of filter
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settings.Brej = 5e3;
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settings.fileName = 'D:\Long\NAVIS\Data\2023-12-20.bin';
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%settings.fileName = 'E:\TEXBAT\cleanDynamic_spoofing.bin';
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%settings.fileName ='K:\DATA\Projects\SDR\gnss-sdr-sim\vs-gps-sdr-sim\vs-gps-sdr-sim\x64\Debug\gpssim.bin';'D:\test_4093.bin';'D:\RTL2832U_Data\test_1.bin';'D:\test.bin';['C:\rtldata\test_0.bin'];%['C:\Users\thuan\Downloads\sdrsharp-x86\SDRSharp_20151223_155844Z_1575420000Hz_IQ.wav'];%
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% settings.fileName = ['D:\IF_DATA\RTL2832\140320_1243_1.dat'];
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settings.relativeFreq = 0;
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%% Independent parameters
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% Number of channels to be used for signal processing
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settings.numberOfChannels = 5;
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% Intermediate, sampling and code frequencies
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settings.IF = 0e3; %[Hz] tần số trung gian
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settings.samplingFreq = 2e6; %2.5e7; %2e6; 2.6e6; 8184000; [Hz] tần số lấy mẫu
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settings.codeFreqBasis = 1.023e6; %[Hz] tần số mã
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% Define number of chips in a code period
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settings.codeLength = 1023; % số lượng chip trong 1 chu kỳ mã
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settings.samplesPDI = settings.samplingFreq*10e-3;
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% Number of samples per spreading code
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settings.samplesPerCode = round(settings.samplingFreq / ...
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(settings.codeFreqBasis / settings.codeLength));
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settings.dataType = 'int16';
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if strcmp(settings.dataType,'int8')
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settings.dataTypeSize = 1;
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else
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settings.dataTypeSize = 2;
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end;
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%% Acquisition settings ===================================================
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% Skips acquisition in the script postProcessing.m if set to 1
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settings.skipAcquisition = 2e6;
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% List of satellites to look for. Some satellites can be excluded to speed
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% up acquisition
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settings.acqSatelliteList = 1:32; %[PRN numbers]
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% Band around IF to search for satellite signal. Depends on max Doppler
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settings.acqSearchBand = 10; %[kHz]
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% Threshold for the signal presence decision rule
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settings.acqThreshold = 2.4;
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%% Tracking loops settings ================================================
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% Code tracking loop parameters
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settings.dllDampingRatio = 0.7;
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settings.dllNoiseBandwidth = 2; %[Hz] 2
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settings.dllCorrelatorSpacing = 0.5; %[chips]
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% Carrier tracking loop parameters
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settings.pllDampingRatio = 0.7;
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settings.pllNoiseBandwidth = 25; %[Hz] 25
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%% Navigation solution settings ===========================================
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% Period for calculating pseudoranges and position
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settings.navSolPeriod = 100; %[ms]
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% Elevation mask to exclude signals from satellites at low elevation
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settings.elevationMask = 10; %[degrees 0 - 90]
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% Enable/disable use of tropospheric correction
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settings.useTropCorr = 1; % 0 - Off
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% 1 - On
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% True position of the antenna in UTM system (if known). Otherwise enter
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% all NaN's and mean position will be used as a reference .
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settings.truePosition.E = nan;
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settings.truePosition.N = nan;
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settings.truePosition.U = nan;
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%% Plot settings ==========================================================
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% Enable/disable plotting of the tracking results for each channel
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settings.plotTracking = 1; % 0 - Off
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% 1 - On
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settings.plotAcquisition = 1;
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%% Constants ==============================================================
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settings.c = 299792458; % The speed of light, [m/s]
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settings.startOffset = 68.802; %[ms] Initial sign. travel time
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