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https://github.com/sergio-vicenzo/gpsl1-dpemodule

Open-source GNSS Direct Position Estimation Plug-in Module for MATLAB-based Two-step Positioning Software Defined Receivers
https://github.com/sergio-vicenzo/gpsl1-dpemodule

directpositionestimation dpe globalnavigationsatellitesystem gnss gnss-codes gnss-denied-environments gnss-receiver gnss-sdr gps matlab sdr softgnss software-defined-radio softwaredefinedreceiver urban urban-navigation

Last synced: 18 days ago
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Open-source GNSS Direct Position Estimation Plug-in Module for MATLAB-based Two-step Positioning Software Defined Receivers

Host: GitHub
URL: https://github.com/sergio-vicenzo/gpsl1-dpemodule
Owner: Sergio-Vicenzo
License: gpl-2.0
Created: 2024-05-07T07:17:57.000Z (8 months ago)
Default Branch: main
Last Pushed: 2024-09-14T08:25:13.000Z (3 months ago)
Last Synced: 2024-09-14T19:25:46.850Z (3 months ago)
Topics: directpositionestimation, dpe, globalnavigationsatellitesystem, gnss, gnss-codes, gnss-denied-environments, gnss-receiver, gnss-sdr, gps, matlab, sdr, softgnss, software-defined-radio, softwaredefinedreceiver, urban, urban-navigation
Language: MATLAB
Homepage: https://www.ion.org/gnss/abstracts.cfm?paperID=13473
Size: 7.72 MB
Stars: 6
Watchers: 0
Forks: 3
Open Issues: 0
Metadata Files:
- Readme: readme - SoftGNSS.txt
- License: license.txt

Awesome Lists containing this project

README

        An Open Source Archive of GNSS Software Defined Radio receivers based on MATLAB

===============================================================================

Authors

-------------------------------------------------------------------------------

Dennis Akos  

E-Mail: 

HP: 

Nagaraj Channarayapatna Shivaramaiah

E-Mail: 

Yafeng Li

E-Mail: 

Jakob Almqvist

E-Mail: <>

Daehee Won 

E-Mail: 

Hinckley

E-Mail: <>

Features

-------------------------------------------------------------------------------

* GNSS signal processing functions written in MATLAB

    * Code generations

    * Signal acquisition / tracking (data + pilot)

    * Decoding navigation messages 

    * Pseudo-range mesurement generation

    * Calculation of position

* Support following signals

    * GPS L1 C/A

    * GPS L2C (data + pilot)

    * GPS L5C (data + pilot)

    * Galileo E1 (data + pilot)

    * Galileo E5a (data + pilot)

    * Galileo E5b (data + pilot)

    * GLONASS L1 C/A

    * GLONASS L2 C/A

    * Beidou Phase II B1

    * Beidou Phase II B2

* Support RF binary file for post processing

    * All the SDRs have been tested with IF signals collected by the NUT4NT 

	sampler of the Ou Amungo company 

	

Directory and Files

-------------------------------------------------------------------------------

./Doc                     Summary PowerPoint documents for each SDR receiver

./Common                  Common functions between differnt SDR receivers

./IF_Data_Set             Folder containing the IF data sets to be processed and 

                          corresponding Metadata files

./GPS_L1_CA               GPS L1 C/A SDR receiver

    ./include             Functions related to NAV data decoding and PVT computation  

    ./init.m              Strating function of the receiver  

    ./initSettings.m      Parameter configurations of the receiver    

    ./postProcessing.m    Top level processing function of the receiver  

    ./acquisition.m       Signal acquisition function  

    ./tracking.m          Signal tracking function 

    ./postNavigation.m    PVT computation

./GPS_L2C                 GPS L2C SDR receiver

    ./include             Functions related to NAV data decoding and PVT computation  

    ./init.m              Strating function of the receiver  

    ./initSettings.m      Parameter configurations of the receiver    

    ./postProcessing.m    Top level processing function of the receiver  

    ./acquisition.m       Signal acquisition function  

    ./tracking.m          Signal tracking function 

    ./postNavigation.m    PVT computation

./GPS_L5C                 GPS L5C SDR receiver

    ./include             Functions related to NAV data decoding and PVT computation  

    ./init.m              Strating function of the receiver  

    ./initSettings.m      Parameter configurations of the receiver    

    ./postProcessing.m    Top level processing function of the receiver  

    ./acquisition.m       Signal acquisition function  

    ./tracking.m          Signal tracking function 

    ./postNavigation.m    PVT computation

./Galileo_E1              Galileo E1 SDR receiver

    ./include             Functions related to NAV data decoding and PVT computation  

    ./init.m              Strating function of the receiver  

    ./initSettings.m      Parameter configurations of the receiver    

    ./postProcessing.m    Top level processing function of the receiver  

    ./acquisition.m       Signal acquisition function  

    ./tracking.m          Signal tracking function 

    ./postNavigation.m    PVT computation

./Galileo_E5a             Galileo E5a SDR receiver

    ./include             Functions related to NAV data decoding and PVT computation  

    ./init.m              Strating function of the receiver  

    ./initSettings.m      Parameter configurations of the receiver    

    ./postProcessing.m    Top level processing function of the receiver  

    ./acquisition.m       Signal acquisition function  

    ./tracking.m          Signal tracking function 

    ./postNavigation.m    PVT computation

./Galileo_E5b             Galileo E5b SDR receiver

    ./include             Functions related to NAV data decoding and PVT computation  

    ./init.m              Strating function of the receiver  

    ./initSettings.m      Parameter configurations of the receiver    

    ./postProcessing.m    Top level processing function of the receiver  

    ./acquisition.m       Signal acquisition function  

    ./tracking.m          Signal tracking function 

    ./postNavigation.m    PVT computation

./Glonass_L1&L2           Glonass L1/L2 C/A SDR receiver

    ./include             Functions related to NAV data decoding and PVT computation  

    ./init.m              Strating function of the receiver  

    ./initSettings.m      Parameter configurations of the receiver    

    ./postProcessing.m    Top level processing function of the receiver  

    ./acquisition.m       Signal acquisition function  

    ./tracking.m          Signal tracking function 

    ./postNavigation.m    PVT computation

./BDS__B1&B2              Beidou B1/B2 SDR receiver

    ./include             Functions related to NAV data decoding and PVT computation  

    ./init.m              Strating function of the receiver  

    ./initSettings.m      Parameter configurations of the receiver    

    ./postProcessing.m    Top level processing function of the receiver  

    ./acquisition.m       Signal acquisition function  

    ./tracking.m          Signal tracking function 

    ./postNavigation.m    PVT computation

 

Software Dependencies

-------------------------------------------------------------------------------

* All the SDRs have been tested on MATLAB R2016b and R2013b. Some functions 

  of the MATLAB Communications System Toolbox are needed:

  -- Create Galois field array: gf()

  -- BCH decoder: bchdec()

  -- Detect errors in input data using CRC: comm.CRCDetector()

  -- Convert convolutional code polynomials to trellis description: poly2trellis()

  -- Convolutionally decode binary data using Viterbi algorithm: vitdec()

  -- Detect errors in input data using CRC: step() 

  

  

 

How to use

-------------------------------------------------------------------------------

* Step 1: Copy the IF data file into folder "IF_Data_Set";

* Step 2: Configue parameters related to IF data file in function "initSettings.m";

* Step 2: Start processing by runing function "init.m".

Implementation details

-------------------------------------------------------------------------------

See the summary PowerPoint documents for each SDRs:

    * GPS L1 C/A

	   -- GPS_L1_CA_SDR.pptx

    * GPS L2c (data + pilot)

	   -- GPS_L2C_SDR.pptx

    * GPS L5 (data + pilot)

	   -- GPS_L5C_SDR.pptx

    * Galileo E1 (data + pilot)

	   -- Galileo_E1_SDR.pptx

    * Galileo E5a (data + pilot)

	   -- Galileo_E5a_SDR.pptx

    * Galileo E5b (data + pilot)

	   -- Galileo_E5b_SDR.pptx

    * GLONASS L1/L2 C/A

	   -- Jakob_GLONASS_Final_Report_20080325.pdf

	   -- Glonass_L1_L2_SDR.pptx

    * Beidou Phase II B1/B2

	   -- Beidou_B1_B2_SDR.pptx

	   

Test signal and parameter configurations

-------------------------------------------------------------------------------

    * GPS_L1_CA_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- IF: 14.58e6 Hz

	   -- sampling Frequency: 53e6 Hz

    * GPS_L2C_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- IF: 7.4e6 Hz

	   -- sampling Frequency: 53e6 Hz	

    * GPS_L5C_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- IF: 13.55e6 Hz

	   -- sampling Frequency: 99.375e6 Hz

    * Galileo_E1_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- IF: 14.58e6 Hz

	   -- sampling Frequency: 53e6 Hz

    * Galileo_E5a_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- IF: 13.55e6 Hz

	   -- sampling Frequency: 99.375e6 Hz

    * Galileo_E5b_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- IF: 17.14e6 Hz

	   -- sampling Frequency: 99.375e6 Hz

    * Glonass_L1_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- Frequency spacing: 562.5e3 Hz 

	   -- IF: 11e6 Hz

	   -- sampling Frequency: 53e6 Hz

    * Glonass_L2_IF_signal.bin

       -- dataType: schar

	   -- Frequency spacing: 437.5e3 Hz

	   -- fileType: 8 bit real samples

	   -- IF: 12e6 Hz

	   -- sampling Frequency: 53e6 Hz

    * Beidou_B1_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- IF: 28.902e6 Hz

	   -- sampling Frequency: 99.375e6 Hz

    * Beidou_B2_IF_signal.bin

       -- dataType: schar

	   -- fileType: 8 bit real samples

	   -- IF: 17.14e6 Hz

	   -- sampling Frequency: 99.375e6 Hz