| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress the increase in processing load in CFAR detecting processing (erroneous alarm ratio constant) even when the number of Doppler filters is increased in order to improve a target detecting performance in a radar signal processing device. SOLUTION: A radar loaded airplane frequency calculating circuit 5 calculates radar loaded airplane frequency, a comparing circuit 6 generates a L-level integration control signal when the corresponding frequency of a received data to be processed in data integration is the radar loaded airplane frequency or lower, and generates an H-level integrated control signal when it is larger. A data integrating circuit 7 substitutes (j)-pieces of received data from an amplitude calculating circuit 2 by the maximum data therein according to the H-level integrated control signal-, and supplies them to the corresponding memory cells of a memory circuit 3, and the data is outputted without integration as it is in case of the L-level integration control signal. A CFAR detecting circuit 4 successively performs the CFAR detecting processing of the integrated or non-integrated amplitude value data which is stored in each memory cell as noticed data, whereby a target is precisely detected while reducing the increase in processing load in the CFAR detecting processing.</p> |
