Install GNU Radio and all needed dependencies:
sudo apt update
sudo apt install gnuradio-dev gr-osmosdr cmake libsndfile1-dev
You might have to disconnect and re-connect your SDR if it was already connected to your computer.
If you want to use USRP devices, you also need to run:
sudo apt install uhd-host
sudo uhd_images_downloader
gr-iridium and GNU Radio use VOLK to do most of the computations. To allow VOLK to chose the best implementations of its DSP algorithms you should run
volk_profile
This instructs VOLK to benchmark all the implementations it knows and write a file which it then uses when running gr-iridium. This will take a few minutes. Make sure to not do other computationally intensive tasks at the same time.
git clone https://github.com/muccc/gr-iridium
cd gr-iridium
cmake -B build
cmake --build build -j 2
sudo cmake --install build
sudo ldconfig
You are now ready to execute iridium-extractor as a normal user. Follow the instructions in
README.md for details.