时频分布后置积累法检测和识别分布目标

A post accumulation method of time-frequency distrubution for targets detection and recognition

摘要: 由于线性调频信号(LFM)的线性时频调制规律,即其模糊度和Wigner-Ville分布(WVD)图象均具有线性峰脊特性,本文利用LFM信号的这一特性,用对其回波的互模糊度函数和WVD进行分析,着重讨论沿着斜脊方向进行后置积累的检测和识别多目标回波的性能,指出WVD后置积累的检测和分辨性能比通用匹配滤波器优越。

Abstract: For a linear-frequency modulation signal,the peak-trace of the ambiguity function or the Wigner-Ville distribution (WVD) is linearity.In this paper,it is developed that the post accumulation along the peak-trace of the WVD of multi-targets echo.A computer simulation show that the performances of target detection and resolution with the WVD post-accumulation are superior to the matched filter.