一种基于能量聚点的目标检测方法

Detection Method of Target Signal Based on Power Gathering-point

定义了刻画信号能量分布的 λ水平能量聚点的概念 ,利用目标信号能量分布的特点 ,通过对信号进行小波分解提取各频段的信号 ,分别作功率谱估计后将频域信号的λ水平能量聚点作为信号特征量 ,用费歇判别分析方法对目标进行检测 。

This paper defines a concept of power gathering-point on λ level of signal, proposes a new detection method of target signal from background based on power gathering-point. The signal is first decomposed by wavelet transform, and on the basis, the decomposed coefficients are reconstructed to form a new time series, from which the power spectrum density estimation and their parameters of power gathering-point on λ level can be extracted by frequence-domain analysis. The effectiveness of the method is verified by a real target signal with additive simulated noise signal.