Ground Control is examining the growing need for resilient Positioning, Navigation, and Timing (PNT) capabilities as maritime operators face increasing incidents of GNSS jamming, spoofing, and signal denial. Read more >>
Reliable positioning data supports activities ranging from commercial shipping and port operations to offshore infrastructure and autonomous vessel development, yet conventional satellite navigation systems are increasingly affected by disruption in contested and congested environments.
Existing approaches to GNSS protection and redundancy have important limitations. Anti-jamming and anti-spoofing technologies focus on detecting or mitigating interference, while multi-constellation receivers remain dependent on satellite systems with shared or comparable vulnerabilities. Differential GPS and terrestrial alternatives can provide additional capabilities, but neither eliminates the fundamental reliance on GNSS or delivers uninterrupted global coverage.
The full article examines how Assured Positioning, Navigation, and Timing supports trusted navigation when GNSS is degraded, denied, or considered unreliable. It also considers Iridium PNT, a commercially available satellite-based PNT service that operates independently of GPS, Galileo, GLONASS, and BeiDou. Its Low Earth Orbit architecture enables stronger received signals, contributing to greater resistance to jamming and spoofing in maritime environments.
Ground Control also explains how RockFLEET Assured continuously compares GNSS data with an authenticated Iridium PNT position and raises alerts when positioning integrity may be at risk. Read the full article to learn how this independent reference can help operators identify potentially jammed, spoofed, or unreliable GNSS data, support operational continuity, and strengthen maritime navigation resilience.
