Unconventional Navigation Approaches Using Signals of Opportunity

Current navigation systems are heavily reliant on GPS for both commercial and military applications. While GPS provides high accuracy, it is subject to denial in a contested environment. Under this effort, NAVSYS shall deliver an alternative navigation (ALTNAV) solution that utilizes signals of opportunity (SoOP) from a combination of commercial and military space systems. This will heavily leverage prior work performed by NAVSYS to deliver PNT as a Service (PNTaaS) under contract to DARPA, Air Force, and Navy customers. Under the Phase I effort, we shall design an ALTNAV solution using SoOP signals and Software Defined Radio (SDR) technology suitable for use on a hypersonic glide vehicle. We shall demonstrate the expected ALTNAV performance through simulation and develop a plan to build a prototype solution in Phase II. We shall work with industry partners to develop a transition plan to a solution suitable for the high-velocity and challenging environmental conditions associated with hypersonic flight or low earth orbit. Under the Phase I option, we shall use prototype hardware and signal simulators to demonstrate a proof of concept of the ALTNAV solution. Under Phase II, we shall build a prototype for live demonstration of the navigation solution using space SoOp broadcasts