TrustPoint is addressing Global Positioning System (GPS) degradation and denial challenges with our integrated, commercial Alternative Positioning, Navigation, and Timing (APNT) solution that includes a proliferated constellation of Low Earth Orbit (LEO) microsatellites to enhance existing GPS services and provide coverage in the event of an unplanned GPS outage or area denial. This creates an opportunity to evaluate how existing and planned U.S. Department of the Navy (DON) User Equipment could benefit from the deployment of this technology to enhance or augment the performance of PNT services provided by GPS. This proposal includes scope to assess the applications of DON User Equipment, and identify DON requirements for integration into TrustPoints commercial APNT solution architecture for future interoperability on DON UE. In addition, DON-focused reference architectures for airborne platforms will be defined, and initial Modeling and Simulation (M&S) performed to evaluate TrustPoint APNT solution availability and performance in uncontested and contested, GPS-denied environments.
Benefit: Alternative PNT systems and services are increasingly critical for civil, commercial, and military operations in land, air, sea, and space domains. GPS-based positioning and time transfer has proliferated in Defense and non-Defense market segments due to affordable User Equipment and high reliability, but GPS outages, degradations, and denials have the potential to disrupt critical operations and infrastructure. U.S. primacy in the PNT domain is increasingly challenged as Peer, Near-Peer and Non-Government Actors routinely jam and spoof GPS signals in conflict and war zones around the globe using basic, cheap, and accessible hardware components alongside open-source software protocols. TrustPoints commercial APNT solution enables improvements in Time To First Fix (TTFF) and positioning/timing accuracy, improved jamming resistance due to frequency diversity and increased signal strength, and improved security features for built-in PNT resiliency independent of or in addition to heritage GPS solutions.
Keywords: GPS denial, GPS denial, GNSS, LEO PNT, PNT resilience, complementary PNT, GPS, Assured PNT, alternative PNT
