| 多卫星系统融合精密单点定位性能分析 |
| |
| 引用本文： | 杨松,张显云,杜宁,鲍新雪,刘芳诚.多卫星系统融合精密单点定位性能分析[J].测绘工程,2017,26(6). |
| |
| 作者姓名： | 杨松 张显云 杜宁 鲍新雪 刘芳诚 |
| |
| 作者单位： | 贵州大学 矿业学院,贵州 贵阳,550025 |
| |
| 基金项目： | 贵州省科技厅联合资金项目，贵州大学研究生重点课程建设项目，贵州省工业公关项目(黔科合GY字，贵州大学测绘科学与技术研究生创新实践基地建设项目 |
| |
| 摘 要： | 随着全球四大卫星导航系统格局的成型,卫星定位系统已从单系统模式发展为如今多系统、多频率融合定位、交互操作的模式。在分析多系统精密单点定位模型及各误差项处理策略的基础上,利用RTKLIB进行GPS,GLONASS,GALILEO,BDS多系统融合精密单点定位试验,并分析其动/静态定位性能。实验结果表明:在单系统空间几何构型较差的情况下,多系统融合精密单点定位较单GPS定位精度可提高20%~40%,收敛时间可缩短35%~50%;在截止高度角超过40°的情况下,单系统会因可见卫星数量不足而无法完成连续定位,而多系统仍能实现高精度的连续定位。这在城区、山区或卫星遮蔽较严重的不利环境中有重要的利用价值。
|
| 关 键 词： | 多系统融合 精密单点定位 定位精度 收敛速度 高度角 |
Analysis of positioning performance on Multi-GNSS integration precise point positioning |
| |
| YANG Song,ZHANG Xianyun,DU Ning,BAO Xinxue,LIU Fangcheng.Analysis of positioning performance on Multi-GNSS integration precise point positioning[J].Engineering of Surveying and Mapping,2017,26(6). |
| |
| Authors: | YANG Song ZHANG Xianyun DU Ning BAO Xinxue LIU Fangcheng |
| |
| Abstract: | With the formation of four global satellite navigation systems,the satellite positioning system has developed from a single model in the past to today's integration positioning mode of multi system, multi frequency, by operation of interaction.On the basis of studying the model of multi-system PPP and the processing strategy of its error term, an experiment on precise point positioning which integrates the four major satellite navigation systems of GPS,GLONASS,GALILEO,BDS is conducted through RTKLIB and its positioning performance in kinematic/static mode is discussed.The results show that, under the condition that the single system with poor geometrical configuration, positioning accuracy of multi-system PPP can be improved by 20%~40% than that of single GPS PPP, and convergence time can be shortened by 35%~50%.Besides, in the case that elevation angle exceeds 40 degrees, single GPS fails to realize continuous positioning due to insufficient number of visible satellites, and simultaneously the multi-system can achieve continuous positioning with relatively high accuracy.This has important value in the city, mountain or the adverse area where shelter is more serious. |
| |
| Keywords: | multi-system integration PPP positioning accuracy convergence rate elevation angle |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
