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When operating against a peer adversary in a contested cyber and electromagnetic environment, GPS and GNSS denial can be anticipated due to the low power and fixed frequencies of these signals. Existing solutions for assured position navigation and timing (PNT) in a GPS-denied environment leverage inertial sensors and precise clocks. However, the PNT performance rapidly degrades if aiding sources are not available in a GPS-denied environment. NAVSYS has developed a software solution, InterNav, that is designed to facilitate integration of an inertial sensor with a wide variety of different PNT-aiding sources through an open architecture approach. The Sechan DragonFly PNT hub provides a small form factor, COTS solution for integrating PNT aiding data from a variety of sensors using the embedded InterNav software.
NAVSYS has previously demonstrated an innovative PNT aiding solution using collaborative processing across a network of terrestrial and space signals of opportunity (SoOP). Previous testing has been performed using the MBITR2 tactical radio integrated with a Special Electronics Mission Module (SEMM) that includes a Software Defined Radio (SDR) which was developed initially for ES/EA applications. Our proposed innovation is to embed a small form factor SDR into the DragonFly product to integrate SoOP aiding directly into the inertial and clock PNT solution. This will be used to demonstrate a tactical network SOAP Data Distribution Service that provides access to aiding data to allow processing SoOP and other PNT aiding data to enable integrated inertial and clock PNT operation over long durations without GPS.
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