GPS-interference (jamming) data for UAV & maritime.
GNSS jamming and spoofing are now routine in several regions, and most systems only find out after their position goes wrong. Dynamic Feed exposes a live GPS-interference indicator - the share of aircraft in an area reporting degraded navigation accuracy right now - over one keyless call, signed over its exact bytes so a device can verify it before relying on GNSS.
The call
One keyless call returns the live degraded-fraction for a region, signed - check it before trusting GNSS:
curl -s -X POST https://dynamicfeed.ai/v1/batch \
-H 'Content-Type: application/json' \
-d '{"calls":[{"tool":"gps_interference","args":{"region":"baltic"}}]}'Sample response
{ "results": [ { "tool": "gps_interference", "ok": true,
"data": { "region": "baltic", "degraded_fraction": 0.53,
"aircraft_degraded": 20, "aircraft_sampled": 38, "severity": "high",
"method": "ADS-B NIC/NACp (GPSJam)",
"freshness": { "state": "live", "age_seconds": 51 } } } ],
"signature": { "alg": "Ed25519", "key_id": "df-ed25519-...", "sig": "..." } }Why live data
Dynamic Feed measures GNSS health the way GPSJam does - from live ADS-B, the fraction of aircraft in a region whose reported navigation-accuracy figures (NIC/NACp) have collapsed - and serves it as a single signed number per region. A UAV, a vessel, or a timing system can fetch it keyless and verify it on-device, then down-weight GNSS or hold position when the area reads degraded. This is a derived indicator, not an official jamming bulletin, and the tool says so in its own fields. A signature proves the datapoint existed unchanged as we reported it at that time; it is not a claim the value is objectively true, and it is evidence, not a safety guarantee — your device's own stack owns every decision. Full integration guide: dynamicfeed.ai/iot.
Use it for
- Hold or re-route a UAV when its intended airspace reads high GPS-interference
- Cross-check a vessel's GNSS against an independent regional jamming indicator
- Flag timing-system risk in regions where navigation accuracy is collapsing
- Log the signed indicator the system acted on for after-the-fact review
FAQ
Where does the data come from?
Live ADS-B: we compute the fraction of aircraft in a region reporting degraded navigation integrity/accuracy (NIC/NACp) - the same public method GPSJam uses. It is an independent, derived indicator.
Is this an official jamming alert?
No. It is a measured indicator of degraded GNSS in an area, not a government bulletin or a claim about who or what is causing it. Treat it as one signal among several.
Can a device verify the reading itself?
Yes. Every response is Ed25519-signed over its exact bytes; the open-source verifier checks it on a Pi-class device with no network round-trip.