GPS/BDS组合单点定位算法及结果分析  

Analysis of GPS/BDS Integrated Single Point Positioning

作　　者：金彪[1] 杨少文 刘万科[3] 

机构地区：[1]航天恒星科技有限公司,北京100086 [2]西安公路研究院,陕西西安710054 [3]武汉大学测绘学院,湖北武汉430079

出　　处：《海洋测绘》2013年第4期39-41,65,共4页Hydrographic Surveying and Charting

基　　金：国家自然科学基金项目(41204030);中央高校基本科研业务费专项资金

摘　　要：介绍了GPS、北斗卫星导航系统的时间和坐标系统,并对二者之间的转换和统一进行了概括分析,推导了GPS/BDS组合单点定位的函数模型和随机模型。编制了相应的计算程序,对实测数据进行了处理与分析。结果表明:相对于单系统,GPS/BDS组合系统能够增加可观测卫星数、减小DOP值、提高定位的精度和可靠性,同时也说明算法可行,程序可靠。The time and coordinates reference system of GPS and BDS and the transformation between them are described in this paper. The function model and stochastic model of the combined system is introduced and derived. On the basis of the theoretical methods, software of combined positioning system is developed. Some conclusions are reached： comparing with the single system, the combined system enhances the number of visible satellites,improves the DOP value, and increases the accuracy and reliability of positioning. It indicates the mathematical model and the algorithms are fight and the test software is reliable and steady.

关 键 词：GPS 北斗卫星导航系统 组合单点定位 DOP 接收机钟差 

分 类 号：P228.4[天文地球—大地测量学与测量工程]