Radio Direction Finding Obfuscation

The proliferation of low-cost and highly capable Software Defined Radios (SDR) makes it difficult for the military to keep communications systems secure from adversary SIGINT systems that can choose from a multitude of different geolocation techniques to find, fix and finish radio frequency emitters. Currently, there are no effective countermeasures to prevent geolocation of military communication systems. Investigation by industry is minimal due to this mainly being a problem for the military. In this proposal the Aspen Team will build on the results of the Phase I SBIR effort and will develop, demonstrate and deliver a prototype based on a technique that was demonstrated over the air in Phase I. Aspen will also explore transition to other devices as hardware and software insertions or as an applique and will continue to refine other developed Phase I techniques for integration. Aspen is uniquely postured to investigate techniques to introduce spatial uncertainty into radio communications geolocation systems based on its expertise in RF signal geolocation, communications, signal processing and waveform generation in support of multiple DOD programs.