GNSS-SDR with LimeSDR

Note

Keep in mind that the installationg and use of the gnss-sdr with the LimeSDR has only been tested on Ubuntu 20.04 LTS.

GNSS SDR

The full installation procedure of the GNSS SDR explained at gnss-sdr.org

Install the dependencies

sudo apt-get install build-essential cmake git pkg-config libboost-dev libboost-date-time-dev libboost-system-dev \
libboost-filesystem-dev  libboost-thread-dev libboost-chrono-dev libboost-serialization-dev libboost-program-options-dev \
libboost-test-dev liblog4cpp5-dev libuhd-dev gnuradio-dev gr-osmosdr libblas-dev liblapack-dev libarmadillo-dev libgflags-dev \
libgoogle-glog-dev libhdf5-dev libgnutls-openssl-dev libmatio-dev libpugixml-dev libpcap-dev libprotobuf-dev protobuf-compiler \
libgtest-dev googletest python-mako python-six

Install GNSS-SDR

git clone https://github.com/gnss-sdr/gnss-sdr
cd gnss-sdr/build
git checkout next
cmake ..
make
sudo make install

Performance Boost

Note

Allows the use of SIMD instructions

Warning

Only run this once

volk_profile
volk_gnsssdr_profile

LimeSDR for GNSS-SDR

SoapySDR and Limesuite

Installation of LimeSDR and Limesuite explained at myriadrf

sudo add-apt-repository -y ppa:myriadrf/drivers
sudo apt-get update
sudo apt-get install limesuite liblimesuite-dev limesuite-udev limesuite-images
sudo apt-get install soapysdr-tools soapysdr-module-lms7

LimeSDR module for GNSS-SDR

Installation of LimeSDR for GNSS SDR explained at gnss-sdr.org

cd
sudo apt-get install gr-limesdr
cd gnss-sdr/build
git checkout next
git pull upstream next
cmake -DENABLE_LIMESDR=ON ..
make && sudo make install

Monitoring blocks (PVT monitoring and GNSS Synchro)

GNSS Synchro

Installation of the GNSS Synchro monitoring block explained at : gnss-sdr.org

Install dependencies

sudo apt-get install build-essential cmake libboost-dev libboost-system-dev libprotobuf-dev protobuf-compiler libncurses5-dev libncursesw5-dev wget

Create a monitoring-client folder and download the required files

mkdir monitoring-client
cd monitoring-client
wget https://raw.githubusercontent.com/torejohansson97/tightly-coupled-gnss-data-logger/main/monitoring-client/gnss_synchro_udp_source.h
wget https://raw.githubusercontent.com/torejohansson97/tightly-coupled-gnss-data-logger/main/monitoring-client/gnss_synchro_udp_source.cc
wget https://raw.githubusercontent.com/torejohansson97/tightly-coupled-gnss-data-logger/main/monitoring-client/main.cc
wget https://raw.githubusercontent.com/torejohansson97/tightly-coupled-gnss-data-logger/main/monitoring-client/CMakeLists.txt
wget https://raw.githubusercontent.com/torejohansson97/tightly-coupled-gnss-data-logger/main/monitoring-client/gnss_synchro.proto
mkdir build
cd build
cmake ../
make

PVT Monitoring

PVT monitoring block explained by : acebrianjuan

cd
git clone https://github.com/acebrianjuan/gnss-sdr-pvt-monitoring-client.git
cd gnss-sdr-pvt-monitoring-client/build
cmake ../
make

Configuration file for acquisition

Create a working directory for GNSS SDR

Download the configuration file for live acquisition with limesdr

wget https://raw.githubusercontent.com/torejohansson97/tightly-coupled-gnss-data-logger/main/GNSS-SDR/limeSDR.conf

Or download the configuration file to replay acquisition with a file of raw data, like explained in here : gnss-sdr.org

wget https://raw.githubusercontent.com/torejohansson97/tightly-coupled-gnss-data-logger/main/GNSS-SDR/Filedump.conf
wget https://sourceforge.net/projects/gnss-sdr/files/data/2013_04_04_GNSS_SIGNAL_at_CTTC_SPAIN.tar.gz
tar -zxvf 2013_04_04_GNSS_SIGNAL_at_CTTC_SPAIN.tar.gz

Warning

The path to the raw data file is labeled as “SignalSource.filename=” in the configuration file. Be careful when you extract the file, the path to the .dat file may be “/2013_04_04_GNSS_SIGNAL_at_CTTC_SPAIN/2013_04_04_GNSS_SIGNAL_at_CTTC_SPAIN.dat”

How to launch the GNSS SDR

cd
cd gnss-sdr
gnss-sdr --config-file=./build/work/Name_of_configfile.conf

If you want to stream real time data using an antenna and limesdr use the configuration file limeSDR.conf

If you want to replay data which was already recorded in a file use the configuration file filedump.conf

You should see something similar to:

And after a few seconds of detecting the GPS signals you should start getting new navigation messages:

If you need more explanation on how to make GNSS SDR work go to https://gnss-sdr.org/my-first-fix/

How to launch PVT Monitoring client

Open new terminal and go to /gnss-sdr-pvt-monitoring-client/build

cd
cd gnss-sdr-pvt-monitoring-client/build
./gnss-sdr-pvt-monitoring-client 1111

1111 being the pvt monitoring port defined in the configuration file

After a few seconds of running the gnss-sdr you should start getting information about the satellites which are detected:

How to launch GNSS Synchro monitoring client

Open new terminal and go to /monitoring-client/build

cd
cd monitoring-client/build
./monitoring-client 1234

1234 being the GNSS Synchro port defined in the configuration file

After a few seconds of running the gnss-sdr you should start getting position fixes which will lead to this kind of data: