Interior Target Tracking Using Digital Communications Signals for Bistatic Radar ....
summary
Prototype implements bistatic radar using digital comms (QPSK) with Gnu Radio for RF I/O and MATLAB for Doppler extraction and tracking, using 5 receivers and external transmitters. Processing extracts Doppler via DFT/MUSIC, copes with large carrier‑frequency offset, denoises with Viterbi and BCJR smoothing, then feeds an extended Kalman filter with a Singer maneuver model. Introduces a balance factor to restore zero‑Doppler. Tested on real hardware in a building and recovers a walking back‑and‑forth trajectory with observable east–west bias and room for multi‑target extension.
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