声引信目标信号过零率分布研究

该文提出一种新的信号分析方法，即信号的过零率分析法，并对其进行了论证，该方法适用于声引信目标信号分析与识别，可以从背景噪声中识别出直升机、坦克，汽车及人行走等，并能排除风和背景噪声的干扰以及人为干扰。与频谱分析法相比，它不需要进行乘法运算，因而处理速度快，分析结果与信号能量无关。文中给出了应用该方法分析的直升机时、坦克声音、大型卡车声音、人员行走的震动信号的过零率曲线。利用该方法可以提取目标信号的

A Study on Distribution of Zero-pass Ratio of Acoustic Fuze Target Signal

A new signal analysis method,the analysis of zero pass rate of the signal,is demonstrated and put forward in this paper.It was applied to analyze and distinguish the target signal of the acoustics fuses.In this way,tank,plane,helicopter,large vehicles and human walking can be distinguished according to sound.The disturbance caused by wind,background noise and artificial interference can be overcome.Unlike spectrum analysis,without multiplication,the processing is made at high speed,its results have no connection with power of the signal.The zero pass rate curves of helicopter,tank,truck and human walking were given in the paper.With the aid of the method,target signal features can be extracted.This function can be approached by simple analogue circuit,which can work fast,and cost less.This method can be used in the acoustic fuses to process signal timely.It can be used in guard circuit of the intelligent mine system as well.