GNSSn

GNSSn is a proposed next-generation global navigation satellite system intended to augment and eventually extend the capabilities of existing global navigation satellite systems. It aims to deliver higher positioning accuracy, improved integrity, and greater resilience to interference, jamming, and spoofing, with particular emphasis on urban environments, critical infrastructure timing, and remote operations.

The concept envisions a coordinated constellation of satellites operating across multiple frequency bands, coupled with advanced ground-control and augmentation networks. GNSSn would support enhanced time transfer, rapid signal acquisition, and robust multipath mitigation. A key design objective is interoperability with current GNSS constellations, allowing receivers to simultaneously process signals from GNSSn and legacy systems to improve availability and reliability.

Signaling for GNSSn is envisioned to include both civilian and restricted signals, with multiple bands to enable precise positioning and real-time integrity information. In addition to traditional ranging signals, GNSSn may incorporate post-quantum or quantum-resistant authentication features to reduce the risk of spoofing and data tampering. Advances in ground infrastructure, such as real-time monitoring and integrity assurance, would complement the satellite signals to support high-assurance timing services.

Applications for GNSSn span transportation, surveying, finance, telecommunications, and disaster response. Potential benefits include centimeter-level positioning accuracy in challenging environments, improved timing for 5G networks and data centers, and more reliable navigation for autonomous systems. As of now, GNSSn remains in the research and standards-development stage, with no published deployment timetable.