Research on Code Tracking Loop Algorithm of GPS Signal

武建锋; 胡永辉

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Research on Code Tracking Loop Algorithm of GPS Signal

更新时间：2026-09-14

- Research on Code Tracking Loop Algorithm of GPS Signal
- GPS信号码跟踪环算法研究
- Vol. 31, Issue 6, Pages: 641-645(2010)
- 作者机构：
  
  1. 中国科学院国家授时中心
  2. 中国科学院研究生院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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武建锋, 胡永辉. Research on Code Tracking Loop Algorithm of GPS Signal[J]. 2010, 31(6): 641-645.
DOI：

武建锋, 胡永辉. Research on Code Tracking Loop Algorithm of GPS Signal[J]. 2010, 31(6): 641-645. DOI：

摘要

对GPS卫星信号传统码跟踪环的跟踪性能和计算量进行了分析

为了提高码跟踪环的计算效率

降低计算量

对非相干型码延迟锁定环进行了研究;以点积功率鉴别器为出发点

对延迟锁定环的环路结构进行了重构

提出了一种改进的环路算法

并对传统环路和改进环路的算法复杂度和硬件成本进行了比较分析.改进环路在不损失跟踪特性的前提下

不仅降低了硬件的实现成本、资源的消耗和计算量

而且提高了计算效率;实验结果表明此改进环路是可行的.对于其他导航系统的接收机来说

此方法也具有一定的适用性.

Abstract

The tracking performance and the computational effort for the traditional code tracking loop of GPS signal are analyzed.In order to enhance computational efficiency

the method for non-coherent code-tracking loops is studied.A revised delay-locked loop based on dot product discriminator is presented by reconstructing the tracking loop-discriminator.The revised algorithm reduces hardware cost and improves computational efficiency as compared with the traditional delay-locked loop.The experiment results show that the algorithm is feasible.The method can be used not only for the GPS code tracking but also for other satellite navigation systems.

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references

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De Gaudenzi R.Direct-sequence spread-spectrum chip tracking in the presence of unresolvable multipath components[J].IEEE Transactions on Vehicular Technology,1999,48(5):1573-1583.

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Borre K,Akos d M,Bertelsen N,et al.A software-defined GPS and galileo receiver[M].Boston:Birkhauser,2007.

何秋生,郝建军,李辉,等.兼容GPS/Galileo系统单频接收机的研究[J].中北大学学报(自然科学版),2007,28(1):87-90.He Qiusheng,Hao Jianjun,Li Hui,et al.Research of combined GPS/Galileo SF receiver[J].Journal of NorthUniversity of China(Natural Science Edition),2007,28(1):87-90.(in Chinese)

武建锋.基于DSP技术的GPS接收机设计[D].西安:中国科学院,2006.

Tsui J B Y.Global positioning system receiver:a software approach[M].New York:John Wiley&Sons,2005.

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