一种基于伪相关函数的CBOC信号跟踪方法  

An Approach of CBOC Signal Tracking Based on Pseudo Correlation Function

作　　者：阮航[1] 刘峰[1] 郑舟[1] 龙腾[1] 

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《北京理工大学学报》2014年第3期316-321,共6页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(61101128)

摘　　要：针对下一代卫星导航系统的设计逐渐完善,卫星导航基带信号处理对环路跟踪灵敏度和抗多径性能要求不断提升的情况,本文基于Galileo E1频点公开的CBOC信号,设计一种构建CBOC信号伪相关函数(PCF)的伪码跟踪方法,并基于该方法,设计了相位锁定环与延迟锁定环路的跟踪策略,实现了环路的高速锁定和稳定跟踪.并通过仿真实验验证了该方法在灵敏度和有限带宽下抗多径两分面提升了CBOC跟踪环路抗多径性能和跟踪灵敏度,改善了跟踪环路在复杂环境下的跟踪性能.In consideration of the construction of the next generation Global navigation satellite system and the high requirement of sensitivity and multipath mitigation, a way of the code tracking which was to construct a pseudo correlation function （PCF） was designed, and the tracking strategy was produced so as to improve the performance of multipath mitigation and promote sensitivity based on the Galileo E1 open service CBOC signal. According to the study results of the bandwidth-limited performance of multipath mitigation and the sensitivity, it is concluded that the new method ameliorates the multipath mitigation and sensitivity of the CBOC signal tracking loop.

关 键 词：CBOC 联合跟踪 抗多径 高灵敏度 

分 类 号：TN96[电子电信—信号与信息处理]