一种基于最小能量泄漏的信号周期估计方法  

Method of Signal Period Estimation Based on the Smallest Energy Leakage

作　　者：刘春艳[1] 韩峰[1] 梅秀庄[1] 

机构地区：[1]内蒙古工业大学机械学院,内蒙古呼和浩特010051

出　　处：《现代电子技术》2009年第7期4-6,10,共4页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(60672138);内蒙古工业大学科研基金资助项目(X200712)

摘　　要：信号周期的估计是信号处理中的一项基础性内容,具有重要的应用价值。通过分析非整周期截断下频谱能量泄漏与截断位置的关系,给出了以最小能量泄漏为准则的信号周期估计判据,同时结合自相关函数的特点,提出了一种基于自相关分析和该判据相结合的信号周期估计方法。理论分析和不同类型信号的实验结果表明,该估计方法具有较强的鲁棒性、抗噪声及抗谐波失真性,且算法简单,精度较高。The estimation of signal periods is a foundational content in signal processing, which is of significant in application. This article analyzes the relationship between the spectrum energy leakage and the interceptive position under non- integer-period truncation,and proposes a criterion of the smallest energy leakage that can be used as a rule of period estimation. The article presents a method of signal period estimation by making full use of the characteristic advantages of both auto- correlation function and the criterion. The theoretical analysis and the experimental results of typical signals indicate that this estimating method is of robust,anti- noise,anti- harmonic distortion as well as concise and precise enough.

关 键 词：非整周期截断 频谱特征 自相关 周期估计 

分 类 号：TN911[电子电信—通信与信息系统]