Patent ID: 8193974
Filing Date: 2012-06-05
Classification: G01S

Abstract:
1. A method for compensating for ambiguous peaks in an estimated range profile, the method comprising: determining an uncompensated range profile estimate using a stepped frequency process based upon an emitted stepped frequency pulse-train comprising a plurality of sub-pulses, wherein a center frequency between adjacent sub-pulses in the stepped frequency pulse train is different; determining, for each of a plurality of focal range bin signal strengths, an associated predicted power level a plurality of ambiguous peaks introduced to the range profile estimate; determining an expected range bin location corrupted by the ambiguous peaks with the predicted power levels; generating a compensated range profile estimate based upon the uncompensated range profile estimate; and iteratively updating the compensated range profile estimate as the predicted power levels contributed to determined range bins are adjusted for each focal range bin, wherein the method further comprises: determining relative location of a plurality of adjacent side lobe range bins based upon an estimated width of contributions by the plurality of ambiguous peaks; and determining the expected range bin locations of contributions due to the plurality of ambiguous peaks.