一种基于伪相关函数的CBOC信号跟踪方法
发布时间:2018-08-27 05:57
【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.
[Abstract]:In order to improve the design of next generation satellite navigation system and improve the loop tracking sensitivity and anti-multipath performance of satellite navigation baseband signal processing, this paper based on the Galileo E1 frequency point open CBOC signal, A pseudo code tracking method based on pseudo correlation function (PCF) of CBOC signal is designed. Based on this method, the tracking strategies of phase locked loop and delay lock loop are designed, and the high speed locking and stable tracking of the loop are realized. The simulation results show that the method can improve the anti-multipath performance and tracking sensitivity of CBOC tracking loop under the condition of sensitivity and limited bandwidth, and improve the tracking performance of the tracking loop in complex environment.
【作者单位】: 北京理工大学信息与电子学院;
【基金】:国家自然科学基金资助项目(61101128)
【分类号】:TN967.1
[Abstract]:In order to improve the design of next generation satellite navigation system and improve the loop tracking sensitivity and anti-multipath performance of satellite navigation baseband signal processing, this paper based on the Galileo E1 frequency point open CBOC signal, A pseudo code tracking method based on pseudo correlation function (PCF) of CBOC signal is designed. Based on this method, the tracking strategies of phase locked loop and delay lock loop are designed, and the high speed locking and stable tracking of the loop are realized. The simulation results show that the method can improve the anti-multipath performance and tracking sensitivity of CBOC tracking loop under the condition of sensitivity and limited bandwidth, and improve the tracking performance of the tracking loop in complex environment.
【作者单位】: 北京理工大学信息与电子学院;
【基金】:国家自然科学基金资助项目(61101128)
【分类号】:TN967.1
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