一种改进的自适应数字延迟锁定辨识器时延估计方法

An Improved Adaptive Digital Delay-Lock Discriminator Time Delay Estimation

对自适应数字延迟锁定辨识器（ＡＤＤＬＤ）时间延迟估计方法进行了改进。以误差样本的遗忘因于加权平均来估计均方误差，从而使自适应时间延迟估计的总体性能有所改善。文中给出了改进的ＡＤＤＬＤ时延估计的算法和两种遗忘因于加权平均方式，分析了其性能，并给出了计算机模拟的结果。

An adaptive digital delay-lock discrithenator (ADDLD) which is used to estimate time delaybetween two signals is improved. The improved method estimates the mean Square error by averagingerror samples with weighted fading memory factors instead of single one. The performances of adaltive time delay estimation are improved by the algorithm of this method, including two types of weithted fading memory factors, the analysis of its performances and the result of computer simulation aregiven.