| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve both of a clutter suppression performance and a target signal preservability. <P>SOLUTION: A radar device includes a transmitter-receiver circuit 1 having a transmission-reception antenna, a plurality of FIR filters 2 for inputting reception signals input from the transmitter-receiver circuit 1 and suppressing clutter from among the reception signals, a plurality of FFT means 3 for fourier-transforming an output signal of each FIR filter 2, FFT output selection means 4 for selecting a FFT output result used for a target signal detection from among the output of the FFT means 3, a plurality of target detection means 5 for detecting target signals by using the output result of the FFT output selection means 4, a display means 6 for displaying a target detection result, and a switching frequency database 7 for storing a switching frequency used for selecting a FFT output result by the FFT output selection means 4. Amplitude characteristics of the FIR filers 2 are all different from one another. The FFT output selection means 4 switches the outputs of the FFT means 3 so as to use the output of the FIR filer 2 with the highest amplitude gain. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
