Patent ID: 8274432
Filing Date: 2012-09-25
Classification: G01S

Abstract:
1. A method for determining a respective electromagnetic parameter and spatial disposition of one or more signal sources in a surveillance space simultaneously bombarded by multiple signals, the method comprising: receiving said multiple signals at each of a plurality of antennas that are spaced apart in a linear array by predefined spacings; simultaneously sampling the respective signals of each of the antennas at a predetermined sampling rate to generate a two-dimensional array of sampled values S calculating a two-dimensional Fourier transform F identifying peaks in the Fourier transform satisfying one or more predetermined criteria, wherein an identified peak satisfying the predetermined criteria is indicative of a signal source in the surveillance space, and wherein a location of the peak in the Fourier transform F for the identified peak, calculating the frequency of the respective signal source using an algebraic involving the predetermined sampling rate.