离散频谱的校正方法综述

回顾了近年来平稳信号处理领域中离散频谱校正的理论研究和发展现状。根据时域信号的组成结构不同,分为两个方面:一是包含单频率成分或者多个间隔较大的频率成分信号的频谱校正方法,另一方面是包含多个密集频率成分信号的频谱校正方法。综合论述了各种离散频谱校正方法的原理、特点及其在工程中的应用。最后还对利用高阶统计量进行谐波恢复和信号重构的频谱分析方法进行了阐述,并对离散频谱校正领域的发展前景进行了探讨和展望。

Review of Correction Methods for Discrete Spectrum

The research progresses of correction methods for discrete spectrum in stationary vibration signal processing in recent years are reviewed. According to the different constructions of signal spectra,the correction methods are divided into two kinds.One kind of them includes those specifically designed for dealing with the spectra with one frequency component or multi frequency components with large frequency interval between adjacent components, and the other include those with many dense frequency components. The principle, characteristic and engineering application of the two kinds of correction methods for discrete spectrum are discussed synthetically. In addition, some spectrum analysis methods with high-order statistics are mentioned which are used to retrieve harmonics and reconstruct signals. The prospect of correction methods for discrete spectrum is summarized.