特征信号检测法

Signature Detection: Method for the Detection of Weak Signals

本文以信号极点的不变性为基础,构造了一种用于可自设计的主动式系统在强噪声背景下的极微弱信号检测的检测器——特征信号检测器。文章在分析经典检测方法对极弱信号检测存在的问题的基础上,提出了特征信号检测的思想。讨论了该方法的基本原理及仿真实验结果。Monte carlo实验表明,这种特征信号检测器的性能对信噪比不敏感,可以在极低信噪比下检测出微弱信号。

A method for the detection of weak signal in noisy background, called the signature detection, is discussed in this paper. The invariant character of poles is used for our detector. Based on the analysis of the weakness of the traditional schemes of detection, a new idea for the detection of very weak signal is presented. The basic principle of this method and the simulation results are discussed. The experiment results prove that the performance of the method is insensitive to signal-to-noise ratio (SNR).