Terribly cute implementation of a real-time software defined radio signal processing and visualization (2D & 3D spectrogram) application.
I set out to write a spectrum analyzer with machine learning capability similar to OmniSIG on a much simpler level. Could you imagine my face when I realized how difficult it would be to just write a spectrum analyzer that runs at real time with high FFT size? Anyways this was a summer project and I failed miserably. Note to future self: learn some of the foundational stuff before jumping head first if its a big project.
Changes to this projects goals:
- Real time, 3D spectrogram, ML model detects and classifies signals
- Real time, high FFT 2D spectrogram, with ML detection
- Real time, low FFT 2D spectrogram similar to torchaudio
One day I will build a working real time spectrum analyzer with high FFT size!
- Abstract class for individual SDR device
- Automatic SDR recognition and setup
- Thread safe callback for real-time data streaming
- USRP B210 support with UHD library
- Threaded IQ receiver
- FFT with PFFFT for real time processing
- STFT spectrogram with overlapping Blackman windows
- Thread safe lock-based circular buffer with bulk copy
- Copy latest for pseudo real time display
- Dear ImGUI and ImPlot for GUI with Dracula theme
- GLAD, GLFW, OpenGL for window management and rendering
- Custom spectrogram colorscheme
- Hardware accelerated 3D spectrogram with movement