Demonstration of Advanced Detection Techniques Against Low Probability of Intercept Avionics Waveforms

SARA proposes to develop an innovative, real-time system comprised of a front-end RF receiver and a back-end digital signal processor. The receiver will measure the avionics' emissions and the DSP will apply the required algorithms to classify the airborneplatform and determine its angle of arrival. The system will operate in real-time, thereby rapidly computing the results and giving the capability of tracking multiple targets with dynamic flight profiles. Emitter identification will be accomplished usingcoherence for non-parametric analysis and the Steiglitz-McBride method for parametric analysis. Azimuth angle determination will be accomplished using superresolution beamforming. Superresolution dramatically reduces system cost and complexity compared tostandard beamforming techniques. Doppler effects will be compensated and the system will provide the additional information of the platform's velocity and range. Multiple, simultaneous targets will be separated and distinguished using both frequency spaceand beam space separation techniques. A full simulation environment of the system will be developed, including all algorithms, Doppler effects, target velocity, and range estimates. The simulation will allow for testing of the system and evaluatingperformance with multiple emitters and independent flight profiles for each platform.This program will provide a