| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain satisfied removal of sea clutter and also easy detection of a pulse signal reflected by a target, in a STC circuit of a radar device using the pulse signal of a different pulse width. <P>SOLUTION: A first attenuator 3 attenuates a short pulse reception signal on the basis of a gain STC1(r) which shows a relation between a distance value and an attenuation amount. A second attenuator 4 attenuates a long pulse reception signal on the basis of a gain STC2(r). A signal selector 5 and a long/short pulse switcher 9 for reception select any one of an output of the first attenuator 3 or an output of the second attenuator 4. An input section 16 is prepared for inputting a distance value for switching the signal selector 5 and the long/short pulse switcher 9 for reception. By a STC controller and a long/short pulse switching controller 17, the signal selector 5 and the long/short pulse switcher 9 for reception are made to execute the switching according to the distance value input by the input section 16. <P>COPYRIGHT: (C)2013,JPO&INPIT |
