基于匹配滤波器的LFM信号鉴相算法

An Algorithm Based Matched Filtering for LFM Signal Initial Phase Difference Estimation

基于匹配滤波理论,提出了一种适合于线性调频(LFM)信号的鉴相算法。利用匹配滤波器的冲击响应包含原信号的初始相位信息,采用匹配滤波器对另一路信号进行处理,分析其相位谱即得到两路LFM信号的相位差。计算机模拟仿真证明了此方法的有效性。

Based on the theory of matched filtering, an algorithm for phase-detecting of the linear frequency-modulation （LFM） signal estimation is proposed. The impulse response of matched filtering having the initial phase information of original signal is used. The other signal matching is processed with matched filtering. The result of analyzing the phase spectrum shows the phase difference of two LFM signals. The effectiveness of this method has been shown by computer simulation.