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本文结合心电信号的数学模型讨论了维格纳分布的交叉干扰问题，以及运用平滑处理消除这一干扰的原理；进而探讨选择两维高斯窗参数的方法。通江模拟信号和实测的心肌缺血家兔心电信号的分析结果证实，平滑维格纳分布既可克服交叉项干扰，又能满足心电信号分析对时间分辨率和频率分辨率的要求。
In this paper, the crosstalk problem of Wigner distribution is discussed based on the mathematical model of ECG signal, and the principle of using smoothening to eliminate this interference is discussed. Then the method of selecting two-dimensional Gaussian window parameters is discussed. The analysis results of Tongjiang analog signal and measured myocardial ischemic rabbit ECG confirmed that the smoothed Vigner distribution can overcome the crosstalk interference and meet the requirements of ECG resolution on time resolution and frequency resolution.