Another Place, Another Time: GPS Threats And Countermeasures
summary
Claims that GNSS can be jammed or spoofed are demonstrated with concrete methods: cheap USB jammers (from about $79) and commercial kits up to hundreds of thousands, and DIY setups using HackRF or bladeRF plus GPS‑SDR‑SIM to transmit on L1 (1575.42 MHz) with ~2.6 MHz sample rate and tuned gain (example -25 dB). A 65‑meter yacht experiment shifts course ~3° by locally overriding signals but requires on‑board proximity or connection to the vessel NMEA bus (Raspberry Pi can inject NMEA). Defenses include antenna arrays (DLR 2×2 beamforming) and commercial “GPS firewall” appliances.
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chapters (11)
- 0:00Introduction
- 1:27GNSS fundamentals
- 7:22History of systems
- 10:27Signal and positioning
- 16:11System security
- 18:20Maritime GPS threats
- 23:49Jamming and spoofing
- 29:55Practical DIY spoofing
- 36:56Maritime attack vectors
- 39:14Countermeasures and protection
- 43:30Q&A and conclusion
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