公开(公告)号：US20050212692A1

公开(公告)日：2005-09-29

申请号：US10809369

申请日：2004-03-26

申请人： David Iny ,  Mark Stenoien ,  Henry Lee

发明人： David Iny ,  Mark Stenoien ,  Henry Lee

IPC分类号： G01S13/76 ,  G01S13/90

CPC分类号： G01S13/765 ,  G01S13/90

摘要： An airborne radar interrogates tags on friendly ground vehicles, which when interrogated by a downlink signal from the radar, sends back a very low level uplink message signal that appears noise-like so as to avoid enemy detection and exploitation. This is achieved by retransmitting a time delayed and phase shifted version of the transmitted pulse from the radar. The digital RF tag captures every other pulse from the radar and transmits a digitally coded spread spectrum pulse back to the radar during every other intervening pulse which includes a pseudo random delay (range hop) and a pseudo random phase (direction).

摘要翻译： 机载雷达询问友好地面车辆上的标签，当通过来自雷达的下行链路信号进行询问时，发回出类似噪声的非常低级别的上行链路消息信号，以避免敌人的检测和利用。 这是通过从雷达重发发射脉冲的延时和相移版本来实现的。 数字RF标签捕获来自雷达的每隔一个脉冲，并在包括伪随机延迟（范围跳跃）和伪随机相位（方向）的每个其他中间脉冲期间将数字编码的扩展频谱脉冲发送回雷达。