Ground Control is advancing navigation resilience for BVLOS drone operations by championing Assured Positioning, Navigation and Timing (A-PNT) as the future of trusted autonomous flight.
While Global Navigation Satellite Systems such as GPS, Galileo, GLONASS, and BeiDou have long underpinned UAV navigation, these signals are inherently weak and increasingly vulnerable to jamming, spoofing, and interference. For BVLOS missions that depend on continuous, provable positioning data, GNSS-only navigation represents a critical single point of failure.
Contested military zones, dense urban canyons, industrial environments, and remote terrain all present real-world signal degradation risks. Loss of trusted PNT does not immediately ground a UAV, but it erodes navigational confidence, forcing mission aborts, compromising airspace compliance, and undermining operational safety.
A-PNT addresses this vulnerability through a layered architecture that complements GNSS with resilient alternatives. Notably, PNT derived from the Iridium Low Earth Orbit constellation delivers signals up to 1,000 times stronger than traditional GNSS and incorporates cryptographic authentication to counter spoofing. Solutions such as RockBLOCK APNT blend GNSS and Iridium PNT for seamless continuity, switching to authenticated satellite timing and positioning when GNSS is degraded.
By integrating multi-source navigation and robust antenna design, A-PNT enables UAVs to sustain autonomy, maintain regulatory compliance, and operate globally with confidence, even when GPS cannot be trusted.
