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| GPS/GLONASS卫星导航系统组合定位的定权方法研究 | |
| 引用本文： | 王福丽,王潜心,成英燕,韦铖.GPS/GLONASS卫星导航系统组合定位的定权方法研究[J].测绘科学,2013,38(1):18-19,32. |
| 作者姓名： | 王福丽 王潜心 成英燕 韦铖 |
| 作者单位： | 1. 中国测绘科学研究院,北京100830;山东科技大学测绘学院,山东青岛266510 2. 中国测绘科学研究院,北京,100830 3. 山东科技大学测绘学院,山东青岛,266510 |
| 基金项目： | 中国测绘科学研究院基本业务费(7771214);国家测绘地理信息局对地观测技术重点实验室开放基金(K201104);地心坐标系维护与推广应用(A1201);卫星连续运行站数据处理(A1928);人事部留学人员科研活动项目择优资助 |
| 摘 要： | 正确合理地确定观测值的权是GPS/GLONASS导航系统组合定位中的一个关键技术问题。本文对GPS/GLONASS导航系统组合定位中几种常用的定权方法进行了比较分析,并以GPS/GLONASS的实测数据为例进行了实验,结果表明:在GPS/GLONASS导航系统组合定位中等精度定权的定位结果精度较差,卫星高度角定权和误差分布律概率密度函数定权后的定位结果精度相当,但较等精度定权法的定位精度都有所提高,赫尔默特方差分量估计法定权的定位结果精度最优。 |
| 关 键 词： | 组合定位 卫星高度角 误差分布律 赫尔默特方差分量估计 |
Weighting methods in GPS/GLONASS integrated positioning |
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| WANG Fu-li,WANG Qin-xin,CHENG Ying-yan,WEI Cheng.Weighting methods in GPS/GLONASS integrated positioning[J].Science of Surveying and Mapping,2013,38(1):18-19,32. | |
| Authors: | WANG Fu-li WANG Qin-xin CHENG Ying-yan WEI Cheng |
| Institution: | ②(①Chinese Academy of Surveying and Mapping,Beijing 100830,China;②Shandong University of Science and Technology,Shandong Qingdao 266510,China) |
| Abstract: | It is the key technology to the GPS/GLONASS integrated positioning to determine the weights of the observation values.This paper compared several methods of determining weight which are usually used in the GPS/GLONASS integrated positioning,and experiments were carried on by using the GPS/GLONASS integrated data.The results showed that the positioning accuracy of method of equal accuracy determining weight is worse than that of others methods.The positioning accuracy of method of determining weights according to satellite elevation angle and the erroneous distribution law probability density function determining weights are the same,however,they are better than the results of the method of equal accuracy determining weight.The results of Helmert method variance components estimation determining weights is the best in all the four methods. |
| Keywords: | integrated positioning satellite elevation angle erroneous distribution law Helmert method of variance components estimation |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |