Low Probability of Intercept PNT Augmentation Network

Echo Ridge proposes to prototype and performance characterize an LPI/LPD PNT augmentation system (including beacons and user equipment) using a hybrid frequency hopping, spread spectrum signal-based waveform which we believe can achieve high accuracy performance in a variety of operational scenarios. We have chosen this waveform class for its unique combination of PNT performance and low probability of intercept. We will build upon an existing Echo Ridge signal-based PNT waveform where we have demonstrated high location accuracy and low detectability. This waveform has been analyzed by outside experts for LPD/LPI performance. In addition to PNT and LPI performance, a key criteria in our design is operational utility measured in terms of flexibility/lack of constraints and SWaP-C. For operational flexibility and low cost, it will include battery and prime-powered beacons, and vehicular and dismount user equipment. Both the beacons and user equipment will be based on SDR technology, allowing PNT and communications functionality to be hosted economically on a common platform. In Phase II, prototype SDR-based UE and beacon platforms will be used for lab and field-based demonstrations and performance characterization.