摘要
北斗三号全球短报文通信系统可以满足全球、全天候、长远距离、高动态的使用需求。针对北斗三号短报文终端产品高动态使用环境的需求,文中提出一种快速的捕获跟踪算法,采用并行相关+FFT的传统架构,通过大量的仿真数据验证不同的并行路数和FFT点数下的捕获性能,最终实现12 km/s使用条件下的快速捕获。
Beidou⁃3 global short message communication system can meet the needs of global,all⁃weather,long⁃distance and high⁃dynamic.Due to the characteristics of MEO(medium earth orbit)satellite′s non⁃stationary orbit,there is a larger Doppler frequency shift in comparison with the ground mobile terminal.A fast capture and tracking algorithm is proposed in this paper.The traditional architecture of parallel correlation+FFT is adopted in the capture algorithm.The capture performance of the algorithm is verified with a large number of simulation data when the parallel channels and FFT pointsare different.The fast capture is realized under the condition of 12 km/s.
作者
蔡文炳
陈美杉
张银辉
徐峰
潘鑫
CAI Wenbing;CHEN Meishan;ZHANG Yinhui;XU Feng;PAN Xin(Beijing Institute of Tracking and Telecommunication Technology,Beijing 100094,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)
出处
《现代电子技术》
2023年第7期10-13,共4页
Modern Electronics Technique
关键词
北斗三号
短报文
通信系统
快速捕获
捕获算法
跟踪算法
仿真分析
Beidou⁃3
short message
communication system
fast capture
capture algorithm
tracking algorithm
simula⁃tion analysis
