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    • 2. 发明授权
    • Radar device
    • 雷达设备
    • US5959571A
    • 1999-09-28
    • US981054
    • 1997-12-11
    • Yasushi AoyagiToshihide FukuchiKiyoshi InoueRyuji Kohno
    • Yasushi AoyagiToshihide FukuchiKiyoshi InoueRyuji Kohno
    • G01S7/02G01S13/32G01S13/42G01S13/93
    • G01S13/325G01S13/42G01S2013/9375
    • A radar device transmits an electric wave whose band is spread by a PN code, receives a reflected wave of the electric wave from an object 10, detects correlation between a received signal and a PN code which is delayed, and thereby detects the object. A receiving part 18 connects three receiving antennas 16a.about.16c sequentially one by one, thereby to receive a reflected wave from an object. The three receiving antennas are arranged having their directions so staggered that their antenna beam patterns partly overlap with each other. A correlation detection circuit 19 detects such a slide width that a value of correlation between a received signal received by each of the antennas and the PN code exceeds a predetermined threshold. An operation part 12 obtains an azimuth of an object based on the detected slide width and beam pattern characteristics of the antennas.
    • PCT No.PCT / JP97 / 10372 Sec。 371 1997年12月11日第 102(e)日期1997年12月11日PCT 1997年4月22日提交PCT公布。 公开号WO97 / 40400 PCT 日期1997年10月30日雷达装置发送带宽由PN码扩展的电波,从对象10接收电波的反射波,检测接收信号与被延迟的PN码之间的相关性,从而 检测物体。 接收部分18依次连接三个接收天线16a差分16c,从而接收来自物体的反射波。 三个接收天线被布置成具有如此交错的方向,使得它们的天线波束图案彼此部分重叠。 相关检测电路19检测由每个天线接收的接收信号与PN码之间的相关值超过预定阈值的滑动宽度。 操作部分12基于检测到的天线的滑动宽度和波束图案特性来获得对象的方位角。