中文摘要：

近年来针对频谱泄漏抑制方法的研究受到广泛关注并取得了很大发展。根据DFT处理过程阐述了频谱泄漏现象并从理论上分析了频谱泄漏原因,给出了一种频谱泄漏衡量指标和抑制系数,阐明了长程和短程两类频谱泄漏的内在联系。根据频谱泄漏类型,分别从短程频谱泄漏和长程频谱泄漏两方面,综合论述了现有频谱泄漏抑制方法的基本思想、算法原理和特点,最后对频谱泄漏抑制方法的发展前景进行了探讨和展望。

英文摘要：

In recent years the study of spectrum leakage suppression method has been widely followed and achieved great development. This paper expounded the phenomenon of spectral leakage from DFT process and analyzed in theory causations of spectral leakage. Spectral leakage generally was divided into long range spectral leakage and short range spectral leakage. This paper illuminated the connection between the two types of spectral leakage. Also, it introduced an index for spectral leakage measurement and a coefficient for spectral leakage suppression evaluation. It summarized respectively the basic ideas, algorithm principle and characteristics of the methods for spectral leakage suppression from long range spectral leakage and short range spectra/leakage. In the last,it discussed the development prospect of spectral leakage suppression in DFT.