一种数字接收机中DLL的设计  

DLL Design in a Kind of Digital Receiver

作　　者：陆海峰[1] 马宏[2] 

机构地区：[1]太原卫星发射中心,太原030027 [2]装备指挥技术学院,北京101416

出　　处：《遥测遥控》2005年第3期51-54,73,共5页Journal of Telemetry,Tracking and Command

摘　　要：延迟锁定环(DLL)是扩频接收机中实现PN码捕获和跟踪的一个重要部分,文中讨论延迟锁定环的数字化实现。介绍延迟锁定环的经典结构、数控振荡器、伪码发生器、鉴别器、环路滤波器四个模块的工作原理以及在可编程器件中的设计和环路滤波器的参数设计,最后给出实验结果。Delay-locked loop is important to the acquisition and tracking of PN code.This paper emphasizes on the digital implementation of Delay-locked loop.Firstly,the typical composition and operation principle are introduced.Then,the digital implementation of digital control oscillator,PN code generator,discriminator,and Loop filter are presented.The calculation of perfermance index of each modulus are discussed.At last,the results of the experiment are analysed.

关 键 词：延迟锁定环 数控振荡器 伪码发生器 鉴别器 环路滤波器 

分 类 号：TN85[电子电信—信息与通信工程]