Jamming shouts. Spoofing lies. We catch both at the antenna.
Sep. 23 2026Jamming shouts, but spoofing lies silently. Download our whitepaper and discover how Ship Monitor by JDS’s ESA-audited shore stations catch corrupt GPS signals in real time at the physical antenna.
The Silent Threat of GPS Spoofing
When someone jams GPS, everybody knows. The signal disappears, the receiver loses lock, and the navigator sees the failure instantly. Spoofing is quieter and far more dangerous. The attacker counterfeits the satellite signal itself. The bridge shows a normal position. The chart updates smoothly. The vessel drifts off its true course, and nothing on board raises an alarm, because every instrument is drinking from the same poisoned source.
Real-Time Cross-Checking Across Constellations
Most of the industry detects this after the fact, by analysing corrupted vessel tracks hours or days later. At Ship Monitor by JDS, we built shore stations that watch the attack happen in real time. Our hybrid sensor stations measure the physical radio spectrum itself: signal strength, satellite geometry, and high-precision timing across GPS, Galileo, GLONASS, BeiDou, QZSS and NavIC. Interference rarely compromises every constellation at once. When GPS deviates while Galileo and GLONASS hold true, the cross-check flags the anomaly within seconds.
Letting RF Physics Do the Verifying
The physics does the verifying. A radio signal fades predictably over distance, so every transmission arriving at our stations carries its own evidence of how far it has travelled. When a vessel’s reported position tells one story and the physical signal tells another, the claim collapses. If the radio signal arrives from the south but the reported position is north-east, the track is spoofed. No guesswork required.
ESA Validation and Coastline Deployment
This engineering has just carried us through the European Space Agency’s BIC Northern Germany incubation programme, with formal graduation in June 2026. Every component in the station is sourced from EU suppliers. ESA audited and validated the architecture. The station is now a commercial production unit, deployed along the German coast with federal BMWK support, and our wider network handles up to 700 million AIS messages a day.
Fixing Data at the Source, Not the Cloud
Clean data at the antenna costs less than dirty data scrubbed in the cloud. That is the whole argument, and it is why the era of treating maritime data as a cheap, unverified commodity is coming to an end.
The full technical story is in our second white paper.
