| 一种顾及几何精度因子的GNSS控制网构型选站方法CSCD |
| |
| 引用本文： | 顾嘉琛,田坤俊,宋传峰.一种顾及几何精度因子的GNSS控制网构型选站方法CSCD[J].全球定位系统,2022,47(3):51-55. |
| |
| 作者姓名： | 顾嘉琛 田坤俊 宋传峰 |
| |
| 作者单位： | 1.山东无形信息技术有限公司, 山东 泰安 271000 |
| |
| 摘 要： | 在相对定位基线解算过程中,控制网约束点坐标位置的选取对数据解算精度有一定的影响.讨论了顾及最小几何精度因子(GDOP)值控制网构型选站方法,对全球MGEX(Multi-GNSS Experiment)测站进行6个约束点基准站的选择,利用北斗二号/北斗三号(BDS2/BDS-3)的实测数据,对全球18个连续监测评估系统(iGMAS)观测站的站坐标进行解算,并与全球格网化随机选站法选站结果的解算精度进行对比.实验结果表明:相较于格网化随机选站法,采用顾及GDOP值选站法进行相对定位基线解算时,6000 km以上的基线长度标准差值能够提高约7 mm;长基线在东(E)、北(N)、天顶(U)三方向的标准差值精度提升约5 mm;待定点的点位精度能够提升约40%.可以看出采用GDOP法选站可以提高BDS-2/BDS-3相对定位解算精度.
|
| 关 键 词： | 几何精度因子(GDOP)值 格网法 北斗二号/北斗三号(BDS-2/BDS-3)相对定位 优化选站 |
| 收稿时间： | 2021-05-14 |
A GNSS control network configuration selection method considering geometric precision factor |
| |
| Affiliation: | 1.Shandong wullsion Information Technology Co., Ltd., Taian 271000, China2.School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China3.Research Center of GNSS, Wuhan University, Wuhan 430079, China |
| |
| Abstract: | In the relative positioning baseline calculation process, selection of the coordinate position of the control network constraint point has a certain impact on the data calculation accuracy. This paper discusses the site selection method of the control network configuration considering the minimumgeometric factor of precision (GDOP), the selection of 6 constraint point reference stations for the global MGEX (Multi-GNSS Experiment) stations, and the use of BeiDou-2/BeiDou-3 (BDS-2/BDS-3) actual measurement data to compare the results of 18 Interactive Generator of Multimedia Application System (iGMAS) stations around the world. The station coordinates are calculated and compared with the accuracy of the results of the global grid-based random station selection method. The experimental results show that compared with the grid-based random station selection method, when the GDOP value selection method is used to calculate the relative positioning baseline, the standard deviation of the baseline length above 6 000 km can be increased by about 7 mm. For the long baseline, the standard deviation accuracy in east (E), north (N), up (U) can be increased by about 5 mm; the position accuracy of the pending point can be increased by about 40%. It can be seen that GDOP method can improve the relative positioning accuracy of BDS-2/BDS-3. |
| |
| Keywords: | |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《全球定位系统》浏览原始摘要信息 |
|
点击此处可从《全球定位系统》下载全文 |
|
