| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radar receiver which reduces white noise included in a detected signal and reduces distortion in the detected signal and a radar apparatus which has good range-sensing sensitivity and performs accurate range sensing. <P>SOLUTION: A pulse-modulated wave received by an antenna 54 is inputted into a high-frequency receiver 12 as a reception pulse-modulated signal. The high-frequency receiver 12 performs amplification, frequency conversion, or the like on the reception pulse-modulated signal. A signal outputted by the high-frequency receiver 12 is subjected to a reduction in white noise by a predetection band-limit filter 14 and is then inputted into a multistage detection amplifier 20. The multistage detection amplifier 20 comprises a plurality of unit detection amplifiers 26 and sums a detected output signal of each unit detection amplifier 26 and outputs it. An interstage band-limit filter 30 is provided between the stage of the plurality of unit detection amplifiers 26 to reduce the white noise outputted by the multistage detection amplifier 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
