GPS interference has moved out of the conflict zone and into routine European operations. For surveyors, drone pilots and machine-control crews, positioning that quietly degrades or misleads is now a live risk, and resilience is becoming part of the job.
Over the past year, European aviation and maritime bodies have raised the alarm on GNSS jamming and spoofing. EASA, Eurocontrol and IATA have set out a coordinated action plan, and the EU is standing up a capability to detect and localise interference from 2026. Public tracking records thousands of incidents a month, concentrated around the Baltic and eastern Europe but far from confined there. The relevant point for engineers is simple: the same satellite signals that guide an aircraft also drive the survey rover, the drone and the dozer blade.
GNSS signals arrive at ground level extremely weak, which makes them easy to overpower. A single illegal chirp jammer in a passing vehicle can disrupt reception across a radius of several hundred metres, enough to stall a survey or a machine-control session with no warning.
Two very different failures
Jamming and spoofing fail in opposite ways. Jamming floods the band with noise until the receiver simply loses its fix. That is disruptive, but at least it is visible, because the work stops. Spoofing is subtler and more dangerous: counterfeit signals feed the receiver a believable yet wrong position, heading or time. For an automated machine or an autonomous drone that trusts its position, a confident but false fix is worse than no fix at all.
What resilience actually looks like
No correction service can shield a rover whose antenna is being actively overwhelmed, and honest engineering starts by saying so. Resilience is layered, and the first and cheapest layer is diversity of signals. A receiver tracking four constellations across multiple frequencies is far harder to deny or deceive than a GPS-only unit, and authenticated signals such as Galileo’s navigation message authentication provide a means of flagging some spoofing attempts.
This is where a multi-constellation correction service is quietly relevant. RTKdata.com supplies corrections over the open NTRIP protocol for GPS, Galileo, GLONASS and BeiDou together, from more than 20,000 reference stations across 140 countries. The corrections travel over an internet connection rather than the vulnerable satellite band, so the data path is not taken down by a jammer aimed at the sky, and supporting every major constellation lets a receiver lean on whatever signals remain trustworthy instead of depending on one.
Suspicion as a site habit
Beyond equipment, awareness is the habit that protects a job. Watching the fix status and the age of corrections, treating a sudden coordinate jump or an implausibly perfect fix as a warning rather than a result, and knowing when to pause instead of trusting the number are becoming ordinary parts of the workflow. On safety-critical setting-out, a quick check against a known control point catches a great deal.
Access to the service is subscription-based at $40 per month or $400 annually, with volume options for teams running several receivers, and a 30-day free trial for evaluation on live work: rtkdata.com/try-rtk-corrections-free-for-30-days.
Interference is now a standing condition of satellite positioning in Europe, not a rare event. Choosing multiconstellation-capable positioning and building a little healthy suspicion into the workflow is a low-cost hedge against a threat that shows no sign of fading.
Author: Konstantin Nidens is co-founder of RTKdata.com, a provider of global GNSS correction services for surveying, construction, machine control and autonomous systems.