Software defined radio based Global Navigation Satellite System real time spoofing....
summary
Demonstrates a working GNSS spoofing detector and cleaner built with Ettus Research B210 dual-input front end, a Pluto SDR spoofer clocked by a CXO, and gnss-sdr on Raspberry Pi4; detection uses codeless processing (square the signal) and flags spoofing when per-satellite inter-antenna phase differences have low standard deviation; cancellation computes complex weights to subtract one antenna from the other (least-squares solved iteratively with stochastic gradient), recovering true GPS L1 fixes in lab tests while noting real-time lock loss when the spoofer/jammer moves and CPU speedups of 3–7× using buildroot-compiled VOLK.
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chapters (10)
- 0:00Software defined radio based Global Navigation Satellite System real time spoofing detection and cancellation
- 1:08SDR based GNSS receiver
- 10:25Post-processing spoofing cancellation: Doppler-PRN maps
- 12:30Post-processing spoofing cancellation: setup
- 14:37Post-processing spoofing cancellation: decoding
- 19:20Real time spoofing cancellation
- 20:37Buildroot for embedded GNU Radio/gnss-sdr
- 24:10Jamming cancellation: post-processing
- 25:10Jamming cancellation: real time
- 27:44Conclusion and perspectives
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