基本信息:
- 专利标题: MULTIPLE RANGE INTERVAL CLUTTER CANCELLATION CIRCUIT
- 专利标题(中):多范围间隔离合器取消电路
- 申请号:PCT/US1987001653 申请日:1987-07-06
- 公开(公告)号:WO1988000355A1 公开(公告)日:1988-01-14
- 发明人: HUGHES AIRCRAFT COMPANY , O'BRIEN, Edwin, L.
- 申请人: HUGHES AIRCRAFT COMPANY
- 专利权人: HUGHES AIRCRAFT COMPANY
- 当前专利权人: HUGHES AIRCRAFT COMPANY
- 优先权: US882,582 19860707
- 主分类号: G01S13/52
- IPC分类号: G01S13/52
摘要:
A multiple range interval clutter cancellation circuit for MTI radars, for assuring cancellation of narrow band clutter in the second or further range interval, while preserving wideband cancellation in the nearer range intervals and economizing on the number of fill pulses. The circuit includes two clutter cancellers (80a and 80b). One canceller (80b) has a relatively narrow band clutter rejection bandwidth, and effectively a higher number of fill pulses in relation to the clutter rejection bandwidth and effective number of fill pulses for the second canceller (80a). The outputs of the two cancellers (80a and 80b) are subjected to an AND gate (85) function, such that only targets which pass through the clutter rejection bandwidth of both cancellers (80a and 80b) are reported as a target. The circuit obtains the elimination of returns from ambiguous range interval clutter with less transmitted energy and time than conventional canceller circuits.