基于Wigner高阶谱的ECG信号分析

Analysis of ECG Signal Base on Wigner-Ville High-Order Spectra

采用二阶Choi-Wigner Ville变换来分析晚电位信号,解决了用时域或频域方法不能观测到晚电位的问题,并对消除交叉干扰项的问题进行了研究。该方法取得很好的效果,特别针对非高斯信号,它能给出更好的时频分辨率,给医生提供一种新的诊断工具。

The study of electrocardiograph signals （ECG） in the time or in the frequency domain taken separately doesn＇t allow the detection of arrhythmia and late potentials. The second order Choi Wigner Ville transformation can be applied for the detection of cardiac late potentials, and the problem of how to remove cross-terms is analyzed. The method is effective, especially for real non Gaussian signal. It gives better time frequency resolution and provides doctor with a tool for diagnosis.