摘要
脉冲图案设计是当前解决伪卫星远近效应的有效方式。针对当前伪卫星信号捕获不易的问题,在GPS/BD双系统伪卫星平台的基础上,对伪卫星脉冲信号的捕获性能从脉冲信号伪卫星间和伪卫星对接收机的影响进行仿真分析。仿真结果表明,伪卫星信号占空比和是影响卫星信号接收的主要原因,伪卫星间的干扰主要与跟踪环路被激励和部分自相关偏差有关。
The pulse pattern design is an effective way to solve the current pseudolite near-far effect.The current pseudolite signal is not captured easily.In view of this problem,this paper simulates and analyzes the influence among pseudolites pulse signals as well as between pseudolites and receivers based on GPS / BD dual system pseudo-satellite platform. The simulation results show that the main reason of influencing satellite signals receiving is the pseudolite signal duty ratio,and the interference among pseudolites is related to tracking loop incentived and partial autocorrelation bias.
出处
《无线电工程》
2016年第11期9-12,16,共5页
Radio Engineering
基金
国家重点研发计划基金资助项目(2016YFB0502101)
关键词
脉冲
捕获
伪卫星
远近效应
pulse
capture
pseudolite
near-far effect
