Shown is a timelapse screen capture of my realtime SDR passive radar tracking passing aircraft. The radar uses UHF digital broadcast TV as the source signal, and a LimeSDR as the receiver. Signal processing is done with C++ and CUDA, with OpenGL for rendering. Y axis represents distance, X axis represents relative velocity.
![](https://i.ytimg.com/vi/REIVAI3hPFA/maxresdefault.jpg)