北斗一号卫星导航系统定位算法及精度分析  

Positioning Algorithm and Precision Analysis of BeiDou-I Satellite Navigation System

作　　者：赵树强[1] 许爱华[1] 张荣之[1] 郭小红[1] 

机构地区：[1]西安卫星测控中心,陕西西安710043

出　　处：《全球定位系统》2008年第1期20-24,共5页Gnss World of China

摘　　要：针对我国建立的北斗一号导航定位系统,介绍了该系统的定位原理,给出了基于北斗双星和三星定位算法的模型,进行了实测数据的解算,分析了星历误差、信号传播误差和接收机钟差等误差对定位精度的影响,计算结果表明该算法简单、实用,可满足中高精度的导航定位用户需求,对二代导航系统定位数据处理和精度分析具有参考价值。The positioning theory of our BeiDou-I satellite navigation system is present in this paper , setting up Double-star positioning ＆ Tri--star positioning models on the basis of the navigation system. Authors validate the models by calculating real--measuring data, and analyze the effect of some errors, as ephemeris error, signal spread error ＆ receiver time error, on positioning precision. High-mid- dle precision navigation positioning users satisfy the results. The models are simple ＆ practical, and provide reference to data processing of BeiDou-Ⅱ satellite navigation positioning system ＆ precision a- nalysis.

关 键 词：北斗一号卫星 定位算法 定位误差 精度分析 

分 类 号：P207[天文地球—测绘科学与技术]