基于高动态环境下B2a信号的双通道跟踪算法  

Based on B2a signal dual channel tracking algorithm in high dynamic environment

作　　者：郑石磊 姚远 王晓君[2] ZHENG Shilei;YAO Yuan;WANG Xiaojun(Shijiazhuang Juyan electronic Technology Co.,Ltd,Shijianzhuang 050020,China;College of information science and engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China)

机构地区：[1]石家庄聚研电子科技有限公司,河北石家庄050020 [2]河北科技大学信息科学与工程学院,河北石家庄050018

出　　处：《通信与信息技术》2024年第4期119-123,共5页Communication & Information Technology

摘　　要：在北斗三号B2a信号中,针对在高动态环境下信号多普勒变化较大,导致导航接收机跟踪环路收敛速度较慢、稳定性差等问题,基于北斗B2a信号传统跟踪环路算法设计出基于三阶锁频辅助四阶锁相的双通道联合跟踪载波跟踪环,并对此跟踪算法进行仿真分析。实验结果表明双通道联合跟踪算法对信号的利用率明显提升且环路收敛速度快,在信号较差的情况下也能实现稳定跟踪,并且稳定性和准确度明显提升。In the B2a signal of Beidou No.3,aiming at the problems such as slow convergence rate and poor stability of the track⁃ing loop of navigation receiver due to the large signal Doppler change under high dynamic environment,a dual-channel joint tracking carrier tracking loop based on the traditional tracking loop algorithm of Beidou B2a signal is designed and simulated.The experimental results show that the dual-channel joint tracking algorithm has significantly improved the signal utilization and fast loop convergence,and can achieve stable tracking in the case of poor signals,and the stability and accuracy are significantly improved.

关 键 词：北斗三号 B2a频点信号 载波跟踪环路 双通道 

分 类 号：TN967.1[电子电信—信号与信息处理]