Patent ID: 7233285

Claim:
A method for receiving electromagnetic radiation with a plurality of antennas and a plurality of receivers, which received electromagnetic radiation is subject to electromagnetic scattering perturbations caused by a platform on which the antennas are mounted, and producing an output that is substantially unaffected by the perturbations and indicates the geolocation of the source of the electromagnetic radiation, the method comprising the steps of: (a) forming a plurality of covariance matrices from a like plurality of sets of samples of the received electromagnetic radiation received with the plurality of antennas and receivers, each matrix yielding a measured array vector; (b) correlating each of the plurality of measured array vectors yielded in step (a) with testing array vectors previously stored during calibration of the receivers and antennas, and retrieving geolocation information associated with correlated, stored testing array vectors, the plurality of geolocation information retrieved being substantially unaffected by the perturbations; (c) summing the plurality of retrieved geolocation information obtained during correlation in step (b) to produce a summation set of geolocation data that has a distinctive point that indicates the geolocation of the source of the electromagnetic radiation; and (d) searching the summation set of geolocation data to identify the distinctive point that indicates the geolocation of the source of the electromagnetic radiation.