| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To make image display performable, even a target continued long in a distance direction, so as to match with an actual target in a clutter suppression circuit for a radar apparatus in which a cell-averaging log CFAR processing operation is performed to a first received video signal to an n-th received video signal (V<SB>in</SB>=X<SB>1</SB>to X<SB>n</SB>) (where n represents an integer of 2 or more) in one transmission period of the radar apparatus. <P>SOLUTION: The clutter suppression circuit for the radar apparatus is provided with monotonously reducing threshold-value generation means (2, 3, 4) by which a first threshold value to an n-th threshold value with reference to the first received video signal to the n-th received video signal are monotonously reduced as distances used to obtain the first received video signal to the n-th received video signal are away; and a subtraction means (6) by which the first threshold value to the n-th threshold value generated by the monotonously reducing threshold-value generation means are subtracted from the first received video signal to the n-th received video signal so as to output a first subtracted- result signal to an n-th subtracted-result signal. <P>COPYRIGHT: (C)2003,JPO</p> |
