伪卫星技术及其在导航定位中的应用分析  

Analysis of the Pseudolite Technique and Its Application in Satellite Navigation System

作　　者：赵娜 赵伟 孙妍 刘春霞 

机构地区：[1]北京卫星导航中心,北京100094

出　　处：《导航定位学报》2014年第1期82-86,共5页Journal of Navigation and Positioning

摘　　要：卫星导航系统可以在任何时间、任何地点为用户提供导航服务,即只要用户能够接收到良好的卫星导航信号,就能确定自身的准确位置。但是当卫星工作异常或因受到建筑物或地形遮挡而信号不佳时,用户定位将受到很大影响。作为一种新型的导航定位技术,伪卫星技术应用于现有的卫星导航系统中,可以大大提高导航系统的定位精度、完备性和有效性。在论述伪卫星技术及其应用的同时,重点对伪卫星技术在已有导航系统星座几何布局改善、差分定位解算等方面进行了分析与验证,为我国卫星导航系统的后续建设及其应用拓展提出了建设性意见。Users who can receive signals of global navigation satellite system （GNSS） satellites perfectly can locate them- selves accurately anywhere on the earth. However, when the satellite is brokewdown or its signal is bad due to the obstruction of buildings or landform, the user＇s orientation will be impacted greatly. As a new navigation technique, the pseudolite tech- nique can be applied in the existed navigation system to improve its precision, self-containment, and validity. This paper dis- cusses the pseudolite technique and its applleation, at the same time, analyzes and validates its improvement on the constella- tion＇s geometric layout of the existing satellite navigation system and difference positioning. At the end, some constructive suggestions on the development of our navigation system and its application expansion are provided.

关 键 词：卫星导航系统 伪卫星技术 星座几何布局 差分定位 

分 类 号：P228.4[天文地球—大地测量学与测量工程]