时频分析:回溯与前瞻  

Which Time-frequency Analysis——A Survey

作　　者：邹红星[1,2] 周小波[1,2] 李衍达[1,2] 

机构地区：[1]清华大学自动化系 [2]智能技术与系统国家重点实验室,北京100084

出　　处：《电子学报》2000年第9期78-84,共7页Acta Electronica Sinica

基　　金：国家自然科学基金!(No 697750 0 9);国防科技重点实验室基金!(No 97JS34 7 1 JW0 1 0 5)

摘　　要：时频分析旨在构造一种时间和频率的密度函数 ,以揭示信号中所包含的频率分量及其演化特性 .本文以抑制Wigner Ville分布中的交叉项干扰为主线 ,综述了时频分析的历史沿革、面临的挑战 ,及在一些领域中的应用 .The aim of time frequency analysis is to find a density in time and frequency that indicates which frequencies are present in the signal and how they evolve with time.Based on the suppression of cross term interference in Wigner Ville distribution,the development history and current and future challenges of time frequency analysis are reviewed in some detail,together with some successful applications appearing in the literature.

关 键 词：时频分析 WIGNER-VILLE分布 交叉项干扰 

分 类 号：TN911.72[电子电信—通信与信息系统]