一种鱼雷电磁引信目标信号特征识别的新方法

A new method of feature recognition in torpedo electromagnetic fuze target signal

描述了表征信号奇异性的Lipchitz指数方法,分析了小波变换检测信号奇异值的原理,结合鱼雷电磁引信目标信号的包络信号在到来和结束时刻以及在最大值点存在奇异值的情况,提出了一种识别包络信号的幅度变化率和持续时间特征的新方法。在Matlab环境中对该方法进行了仿真分析,结果表明:相比传统的模拟电路的识别方法,该方法识别精度高。

The Lipchitz exponent method was described for symbolizing signal′s singularity.The principle of detecting signal′s singularity was analyzed with the method of wavelet transform.Based on the fact that a singular value appears when the envelope of the target signal of torpedo electromagnetic fuze comes and ends or is at the maximum point,a new method was put forward to recognize the scope and lasting time features of the envelope.The simulation and analysis of this method were made in the Matlab environment.The results show that in comparison with the traditional recognition methods of analogy circuits,the new one is good in recognition precision.