窄带环路下基带延迟锁定环跟踪性能分析

摘要

研究了基带延迟锁定环在环路带宽较窄时跟踪性能的计算问题。给出了码延迟相关鉴别器的等效鉴相模型，推导了相关器输出噪声及其在输入端等效噪声的相关函数和功率谱密度函数，并得到了环路带宽较窄时线性跟踪环跟踪精度计算公式的简化形式。%The calculation about the tracking performance of baseband delay locked loop (DLL) with narrow loop bandwidth is studied .The equivalent phase discriminator model of code delay corre-lator is given ,the correlator's output noise and correlator's correlation function and power spectrum density function of the input equivalent noise are induced ,and finally the simple form of the calcula-tion formula of the tracking accuracy equation of DLL with narrow loop band is gained .