基于离散Gabor谱的短波电报信号检测

Signal Detection in Short Wave Telegraph for Discrete Gabor Spectrum

针对电报用单频信号的持续时长来携带报文信息及短波信道易于受到噪声污染的特点，研究了短波电报信号的离散Ｇａｂｏｒ谱检测方法。实验结果显示，用离散Ｇａｂｏｒ谱能够从复杂噪声背景中还原出电报信号，该方法对人耳难以辨别的低信噪比电报信号也具有很好的检测效果，适用于对短波电报信号的检测。该研究在短波电报信号的自动检测和短波电报抗干扰设备的研制方面具有应用前景。

A new detection of telegraphic signal in short wave channel is presented. It is based on the discrete Gabor spectrum (DGS) analysis. This method is able to detect the telegraphic signal well even the signal noise ratio (SNR) is very low. The new method may be used for automatic receiver of short wave telegraph and it has a wide application prospect.