离散频谱泄漏抑制方法研究进展  

Review of methods for against spectrum leakage

作　　者：杨辉跃[1] 涂亚庆[1] 张海涛[1] 毛育文[2] 苏丹[3] 

机构地区：[1]后勤工程学院信息工程系,重庆401311 [2]后勤工程学院国家应急救灾装备研究中心,重庆401311 [3]成都军区第三通信团,重庆400039

出　　处：《计算机应用研究》2015年第6期1608-1613,共6页Application Research of Computers

基　　金：国家自然科学基金资助项目(61271449;61302175);重庆市自然科学基金资助项目(CSTC2012jj A040006;CSTC2013jcyj A40030)

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。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.

关 键 词：离散频谱分析 长程谱泄漏 短程谱泄漏 泄漏抑制 频谱校正 

分 类 号：TN911.7[电子电信—通信与信息系统]