GPS Resilience Layer
An independent positioning source that verifies GNSS when it works, augments it when degraded, and replaces it when denied.
Verify
Cross-check GPS against independent terrestrial signals. Detect spoofing and jamming in real time.
Augment
Fuse satellite and terrestrial signals for improved accuracy in degraded environments.
Replace
Standalone positioning from cell towers, TV, FM, and LEO signals when GPS is denied.
How It Works
Azimuth's passive SDR network listens to LTE/5G, DTV, FM broadcasts, and LEO satellite downlinks. The system extracts timing information from these signals and uses Time-Difference-of-Arrival (TDOA) and signal fingerprinting to compute positions independently of GPS. Cross-checks submitted GPS against radio observations to detect kilometer-scale spoofing in real time.
API Products
Integrity Monitoring
Real-time GNSS spoofing detection via independent signal cross-check
View Pricing →Standards & Compliance
DHS Resilient PNT Conformance — Levels 2–4
IEEE P1952 — Emerging standard for terrestrial PNT systems
US Executive Order 13905 — Resilient Positioning, Navigation, and Timing
Galileo OSNMA — Complementary authentication layer
Market Context
Market TAM
$20.4B
GNSS augmentation market by 2030
Spoofing Surge
500%
Increase in GPS spoofing incidents 2024
Economic Exposure
$1B+
Estimated daily cost of US GPS outage