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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、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声音、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特征。该方法可以完全用模拟电路实现，因而处理速度快，电路功耗低，适用于声引信的适时信号处理中，可作为智能雷弹的微功耗预警电路
Proposed a new signal analysis method, that is, the signal zero-crossing rate analysis method, and its demonstration. The method is suitable for signal analysis and identification of acoustic fuze targets, and can identify helicopters, tanks, automobiles and people walking from background noise, and can eliminate wind and background noise interference as well as human interference. Compared with spectrum analysis, it does not need to multiply, so the processing speed, the analysis results and signal energy has nothing to do. The zero-crossing rate curve of helicopter sound, tank sound, truck sound and walking vibration signal is given in this paper. The method can be used to extract the characteristics of the target signal. The method can be completely implemented by an analog circuit, so that the processing speed is fast and the power consumption of the circuit is low, and the method is suitable for timely signal processing of an acoustic fuze, and can be used as an intelligent pre-warning circuit of an intelligent lightning bomb