NTA supported a large-scale demonstration event of APNT sensors and equipment to assess sensor-level performance and system-level resiliency against complex and emerging GPS threats. The systems included both legacy and emerging platforms and required novel approaches to the integration of next-generation M-Code GPS receivers, sensors and Anti-Jam Antenna Systems (AJAS). For the event, NTA-designed and fabricated self-contained data recording devices, real-time environment interfaces and data reduction techniques to provide customers with performance expectations, mitigation strategies, test analyses and APNT sensor performance evaluations. For legacy systems, novel integration techniques, such as powering AJAS over existing low-loss RF cables, were employed to eliminate costly tactical hardware configuration changes in anticipation of future GPS antenna upgrades. Likewise, NTA applied its experience in navigation-grade+, inertial sensor technology to leverage existing, on-board inertial sensors coupled to an emerging GPS sensor to produce an inertial-only replica-GPS message for use during GPS outage. This improves the systems ability to survive the absence of GPS and leverages existing sensors without costly modifications to tactical software. NTA’s navigation test experience and novel integration approaches have helped our customers establish more cost-effective methods for a resilient APNT platform posture.
Assured Positioning, Navigation and Timing (APNT) Architecture Assessment
