Patent ID: 8294610

Claim:
A method for resolving interferometric angle-of-arrival (AOA) ambiguities due to local multipath reflections, comprising: receiving a direct path emitter signal at an interferometer array of an interferometer system platform, the emitter signal having an unknown position and a true AOA relative to the interferometer system platform that is unknown; receiving one or more local multipath reflections of the signal emitter together with the direct path emitter signal at the interferometer array, the local multipath reflections being reflections of the received direct path emitter signal caused by one or more physical characteristics of the interferometer system platform; measuring the received phase differences of the received direct path and multipath emitter signals between one or more pairs of antenna elements of the interferometer array due to the combination of the AOA of the direct path emitter signal and the local multipath reflections thereof; and selecting the true AOA of the signal emitter based on the measured phase differences or processed data generated therefrom and based on previously defined a priori information generated from measured reception of emitter signals received at the interferometer array of the interferometer system platform from a signal emitter emitting at one or more known positions relative to the interferometer system platform.