无线电通信技术2017，Vol.43Issue(4)：64-66,79,4.DOI:10.3969/j.issn.1003-3114.2017.04.15
GNSS接收机自适应带宽伪码跟踪环路设计
Design of Adaptive Bandwidth DLL for GNSS Receivers
摘要
Abstract
Based on the requirement of fast setting of the Delay Lock Loop (DLL) on GNSS receivers,this paper analyzes the influence of the loop filter bandwidth on the performance of the code loop,and tests the setting time and tracking accuracy of the loop under different bandwidths.An adaptive bandwidth DLL is proposed,which can effectively achieve the fast setting and accurate tracking through the real-time adjustment of the bandwidth of the loop filter,and thus improves the performance of the code loop.A self-developed GNSS receiver is used to test and verify the proposed solution.The result shows that the setting time of the DLL is less than 400 ms.关键词
延迟锁定环路/稳定时间/自适应带宽/GNSSKey words
Delay Lock Loop (DLL)/setting time/adaptive bandwidth/GNSS分类
信息技术与安全科学引用本文复制引用
刘盟超,赵丙风..GNSS接收机自适应带宽伪码跟踪环路设计[J].无线电通信技术,2017,43(4):64-66,79,4.基金项目
国家高技术研究发展计划(863计划)项目(2015AA124001) （863计划）
