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众所周知,在单元平均恒虚警率检测器中,检测概率(Pd)的严重下降是由一组参考单元上出现干扰信号引起的。经常用于预防杂波“边缘”引起过度虚警的一种技术是在一组超前和一组滞后单元之间作“最大”(GO)选择(GO-CFAR)(通常称为“选大”单元平均恒虚警)。但是,其结果表明,对于瑞利目标,在采用GO-CFAR技术时,上述的抑制效应更严重。实际上,几乎使密集的分离目标不可能被检测。为了解决这个问题,提出在两个平均值之间进行“最小”选择(SO)(通常称为“选小”)来作为自
It is well-known that in a unit-averaged CFAR detector, a serious drop in detection probability (Pd) is caused by the presence of interfering signals on a group of reference cells. One technique that is often used to prevent clutter “edges” from causing excessive false alarms is to make a “GO” (GO) selection (GO-CFAR) between a set of leading and lagging cells Average constant false alarm). However, the results show that for the Rayleigh target, the above-mentioned suppression effect is more severe with the GO-CFAR technique. In fact, it is almost impossible to detect dense separation targets. In order to solve this problem, it is proposed to make a “minimum” choice (SO) between two averages (often referred to as “pick small”