基于小波变换理论的电磁泄漏信号处理方法

The Processing Methods of the Electromagnetic Signal Leakage Based on the Wavelet Theory

在电磁泄漏信号检测的过程中,由于外部噪声和检测系统内部产生的噪声,使原始信号中含有了大量的电磁噪声,给信号检测和提取带来了困难,尤其是一些微弱信号,它们很容易混叠在噪声中,而导致检测错误。因此,对所获取到的原始信号进行噪声消除,是我们首先要完成的工作。该文针对上述问题提出小波变换理论来消除电磁泄漏信号的噪声,并通过具体案例介绍了该方法的实际应用过程。

In the test of the electromagnetism leak signal,due to the exterior yawp and the yawp from the test system interior,it will make the original signal contain amount of electromagnetism signals.In this case,it will bring the difficulty on the test and distill of the signal.Especially the feebleness signal,they can easily confuse in the yawp and then will make the test false.So the first work we should do is that we will eliminate the yawp for the original signal.This paper brings forward wavelet transformation theory to solve the problem.And through the barber case we introduce the practical application process of this method.