类正交Gabor展开与在高频心电信号中的应用

Orthogonal Like Gabor Expansion and Its Application to HFECG

研究信号的时频分布可加深对信号的理解。本文实现了一种类正交的信号Ｇａｂｏｒ展开。虽然时域和频域的分辨率存在矛盾，我们可通过针对信号特性和分析的需要选择合适的基函数来得到较好的分布表达。此法用于线性ｃｈｉｒｐ信号和高频心电信号的展开。

Time frequency analysis of a signal can result in better understanding of the characteristics of signals both in time and frequency domain.An orthogonal like Gabor expansion was implemented by the authors of this paper.Though,there always exists trade off between time resolution and fieqyency resolution.We can obtain satisfactory of distribution representation by properly choosing approprite basic function according to charactem of signals and requirements of analysis.Application of orthogonal like Gabor expansion to linear chirp signals.Application of orthogonal like Gabor expansion to linear chirp signals and high frequency ECG was performed,resulting in better effects.