This is a free, open-source radiosonde decoder and tracker. Given an FM-demodulated signal (either in .wav form or directly fed from an audio source), it will decode it and output the recovered data in different formats.

Features:

• Decoding of calibrated PTU data (pressure, temperature, humidity)
• Decoding of GPS position and velocity
• Burstkill timer indication
• GPX and KML output
• Live KML output (realtime position in Google Earth)
• Read FM-demodulated data directly from audio (requires portaudio)

Compatibility matrix:

No external libraries are required to compile the project. Depending on which additional libraries are found however, extra features will be enabled at compile-time. If you do not want/need these features, you can disable them by passing the corresponding flag to cmake (or by toggling them with ccmake):

To compile and install:

mkdir build && cd build
cmake ..
make
sudo make install

sondedump -h to see all the available options.

Examples:

• Use Portaudio device 1 and output to CSV: sondedump --audio-device 1 --csv data.csv
• Read from file and generate GPX track: sondedump --gpx track.gpx <recording.wav>
• Initialize TUI using Portaudio device 0, and start decoding a RS41 sonde: sondedump -a 0 -t rs41 -T