Patent ID: 7952523

Claim:
A method for passive location of a radar transmitter, the method comprising: at each of a plurality of receivers, receiving and time stamping signals from one or more target transmitters; for each receiver, isolating amplitude and time data for each signal of interest; for each signal of interest for each receiver, identifying a peak power time of arrival; for each signal of interest, merging peak power time of arrival data from multiple receivers: for each signal of interest, computing a differential scan observation value for each pair of receivers with peak power time of arrival data for the signal of interest; for each signal of interest, computing a line of position curve for each differential scan observation value based on the differential scan observation value and corresponding receiver locations, wherein the line of position curve comprises a function of a rotational speed of the radar transmitter; and for each signal of interest, determining an estimated target transmitter location based on an intersection of two corresponding line of position curves.