摘要
概述并评估了已有的几种关于GPS的脉冲图案和脉冲调制技术。由于Galileo和GPS在信号结构方面的不同,在Galileo中这些脉冲方案不能直接被采用,所以必须研究和确立新的脉冲方案方式和脉冲图案。讨论并研究了脉冲方案方法的各个要素,完成了基于Galileo信号结构(伪码,码速率,互相关性)的仿真研究并对结果进行了分析。通过仿真确立了脉冲调制的几个关键要素,并由此研究设计了一种新的Galileo伪卫星脉冲优化方案。
This paper summarizes and assesses the existing GPS pulse patterns and pulsing techniques. Due to major differences in the signal structures of GPS and Galileo, these pulsing schemes can＇t be adopted directly. Thus new pulsing schemes and patterns have to be found and investigated.The parameters which charactefise a pulsing scheme are discussed and implemented. Simulations based on the Galileo signal structure （codes,chipping rates,cross correlation properties） have been performed and the results will be presented .These simulations form the basis for the proposal of a new optimised pulsing scheme for Galileo pseudolite.
出处
《无线电工程》
2008年第7期40-42,46,共4页
Radio Engineering
