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本文在分析自相关函数具有的性质基础上,介绍一种从带噪微弱周期测量信号中提取出有用信号的方法——自相关分析法,并通过Matlab7.0进行分析仿真。
Based on the analysis of the properties of autocorrelation function, this paper introduces a method of extracting useful signal from weak periodic signal with noises-autocorrelation analysis method, and analyzes and simulates it by Matlab7.0.