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ESTIMATION OF MISS DISTANCE PARAMETERS BASED ON DOPPLERLET TRANSFORM AND MATCHING PURSUITALGORITHM

Based on the theory of linear transformations, a novel time-frequency representation is presented for the echoes of targets with rectilinear trajectories and constant accelerations in the scoring system. First, time-frequency atoms called Dopplerlets are constructed based on the characteristics of Doppler frequency of echoes. Second, the continuous and discrete Dopplerlet transform is derived and the matching pursuit algorithm is presented. Third, the miss distance parameters are estimated based on the Dopplerlet transform and matching pursuit algorithm. Experimental results are provided to demonstrate the effectiveness and feasibility of the proposed method