公开(公告)号：WO2007055749A3

公开(公告)日：2007-11-22

申请号：PCT/US2006024927

申请日：2006-06-26

Applicant: INFORMATION SYSTEMS LAB INC

Inventor： OHNISHI KATSUMI

IPC: G01S13/00

CPC classification number: G01S13/28 ,  G01S7/292 ,  G01S13/53

Abstract: A radar system and method for detecting targets using pulse-compressed signals is disclosed. In one application, the systems and methods can be used to detect one or more relatively small targets whose pulse-compressed signals are masked by the time-sidelobes of a larger target's return signal. The method includes an iterative, detect-and-subtract signal algorithm that processes the post-compressed signal to detect multiple targets. Specifically the processing algorithm operates on the post-compressed signal to identify a point spread function (PSF) that corresponds to the relatively large target. Once identified, the PSF corresponding to the largest target in the post-compressed signal is subtracted from the post-compressed signal to generate a residual signal. This residual signal, in turn, includes the PSFs for the other targets. This process of identifying and subtracting the PSF of the largest target in the residual signal is then repeated until all targets are detected.

Abstract translation: 公开了一种利用脉冲压缩信号检测目标的雷达系统和方法。 在一个应用中，该系统和方法可用于检测一个或多个相对较小的目标，其脉冲压缩信号被较大目标的返回信号的时间旁瓣所掩盖。 该方法包括迭代的检测和减法信号算法，该算法处理后压缩信号以检测多个目标。 具体地，处理算法对后压缩信号进行操作以识别对应于相对较大目标的点扩散函数（PSF）。 一旦被识别，从压缩后的信号中减去对应于后压缩信号中最大目标的PSF以生成残余信号。 这个残留信号又包括其他目标的PSF。 然后重复识别和减去剩余信号中最大目标的PSF的过程，直到检测到所有目标为止。