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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。
In view of the fact that telegraphy uses the duration of single-frequency signal to carry message information and the short-wave channel is easily contaminated by noise, the discrete Gabor spectrum detection method of shortwave telegraph signal is studied. The experimental results show that the discrete Gabor spectrum can recover the telegraph signal from the complex noise background. This method also has a good detection effect on the low signal-to-noise ratio telegraph signal that is difficult to be identified by human ear and is suitable for the detection of shortwave telegraph signals. The research has application prospects in the automatic detection of shortwave telegraph signals and the development of shortwave telegraphy anti-jamming equipment.