过零率分析在智能雷弹引信中的应用研究

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

The Study on the Application of Zero-Pass Rate Analyzing Method in the Acoustic Fuze for an Intelligent Mine

This paper proposes a new signal analyzing method (zero pass rate analyzing method) and demonstrates it.The method is suitable to analyze and identify the target signals of acoustic fuzes. A tank , helicopter large vehicles and human walk can be distinguished by their sounds with the help of the method, which can eliminate the jamming caused by wind and background noises. Compared with a spectrum analyzing method, it has no need of doing multiplication calculations so that faster processing can be done , and its analysis results are independent of signal energy . This paper gives the zero pass rate curves of the vibration signals of the sounds from a helicopter tank , large vehicle and human walk analyzed by using the method, with the help of which ones can extracte the features of the target signals.The method can use analogue circuits to realize its purpose and is suitable to process the signals of the acoustic fuzes in good time.