该方法还具有幅度检测门限值低的特点，可对幅度为10 - 3级以下的信号进行检测。
This method also has characteristic of low amplitude detection threshold, it can detect weak signals with amplitude value smaller than 10-3 level.
信号检测的最佳门限选择；
混合噪声中信号的检测比高斯噪声中信号的检测复杂，可能为多门限判决。
Detection of signals in hybrid noise environment is more complicated than that in Gaussian noise only. It involves multi-threshold judgement.
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