Hilbert-Huang变换在信号处理中的应用

The Application of Hilbert-Huang Transform in Signal Procession

在许多实际问题中,信号瞬时参数的提取有重要意义.数十年来,人们已提出多种计算方法,但这些方法均有一定局限性.文章利用一种改进的Hilbert变换——Hilbert-Huang变换进行信号瞬时参数的提取,结果表明:Hilbert-H uang变换是对非平稳时程进行数据分析的有效工具。

In practice, it is quite important to extract the instantaneous parameters from signals. However, the existing methods for calculating instantaneous parameters have some defects. In this paper, Hilbert- Huang transform, an accurate method of calculating instantaneous frequency of a constant amplitude signal is suggested. The result shows Hilbert - Huang transform is an efficient method for analysis of non - stationary data.