Robut PNT - Final Report

The ability to operate efficiently in challenging electronic warfare environments is critical for the Swedish Armed Forces. Today's PNT-systems (Position, Navigation and Timing) have critical vulnerabilities due to the GNSS-receivers (Global Navigation Satellite System) inherent susceptibility towards jamming and spoofing. PNT-systems with significantly increased robustness can be developed by combining the future new encrypted services (M-code and Public Regulated Service, PRS) with anti-jam antenna arrays and detection of jamming and spoofing attacks, complemented with selected alternative navigation (AltNav) sensors and sub-systems. This report provides a summary of the research that has been conducted within the R&D project Robust PNT, and its main results. The projects overarching research questions has guided the projects different research activities, which have been focused on: (i) follow and analyse the technology development in the PNT-area, (ii) design of an experimental system for evaluations and demonstrations of a robust GNSS-module, (iii) knowledge building within the GNSS-area primarily concerning the new encrypted signals and detection of jamming and spoofing attacks, and (iv) knowledge building concerning two selected alternative navigation technologies (velocity-aided inertial navigation and robust map-aided navigation). Furthermore, prioritized R&D needs in the short, medium and long term, and prioritized new investments within the PNT-area, are described.