基于受控递归算法的时频分析  

Time-Frequency Analysis Using Controllable Recursive Algorithm

作　　者：王宏伟[1] 赵国庆[2] 王玉军[2] 鲍丹[2] 朱燕[2] 

机构地区：[1]西安邮电学院通信与信息工程学院西安710121 [2]西安电子科技大学电子对抗研究所西安710071

出　　处：《电子科技大学学报》2011年第5期697-702,共6页Journal of University of Electronic Science and Technology of China

基　　金：部级基金

摘　　要：提出了参数受控状态下的递归算法,利用多路并行的递归运算代替传统的滑窗FFT运算,具有速度快且数据存储量少的特点。利用受控递归算法进行时频分析,不仅所分析的频率或频段可灵活设置,而且时间分辨率和频率分辨率可调可控。该算法具有很强的主动性、适应性,适合对局部频段实时地进行信号检测、时频分析和精确的时频参数测量,也可与其他已有的算法或系统配合使用。A new time-frequency analysis theory is proposed based on recursive algorithm whose parameter is under control. The time-frequency analysis system has the merits of high speed and low storage with multi-path parallel recursive calculation instead of conventional sliding window FFT calculation. The center frequency or local frequency band can be rectified expediently. The reeursive algorithm with controllable time resolution and frequency resolution has very strong go-aheadism and adjustability. It possesses the ability of real-time detection and accurate time-frequency parameter measure. The reeursive algorithm can also cooperate with other effectual algorithms or systems.

关 键 词：受控递归算法 参数测量 滑窗FFT 时频分析 

分 类 号：TN971.6[电子电信—信号与信息处理]