RADAR SIGNAL PROCESSING SYSTEM AND RADAR SIGNAL PROCESSING METHOD

摘要

PPROBLEM TO BE SOLVED: To reduce ground clutter and detect a target, even if the apparent Doppler frequency of ground clutter or the target changes through antenna fluctuations due to wind or the like. PSOLUTION: A reception signal of a radar apparatus is converted to a digital reception signal by an A/D converter 1 and then subjected to FFT processing by an MDF processor 2 to be a signal for each Doppler filter bank. A determining processor 3 determines a Doppler filter number, corresponding to a ground clutter center frequency out of the output of the MDF processor 2. A Doppler filter number changer 4 replaces the filter number of each output of the MDF processor 2, with a number obtained by subtracting the Doppler filter number of the center frequency of the ground clutter outputted by the decision processor 3. The Doppler filter number is thereby corrected, to remove filter bank output with a low Doppler frequency by a low Doppler filter signal remover 5 and target information is detected by a maximum value selection processor 61 and a TH-determining processor (2) 62. PCOPYRIGHT: (C)2006,JPO&NCIPI