测绘通报 ›› 2021, Vol. 0 ›› Issue (9): 124-129.doi: 10.13474/j.cnki.11-2246.2021.0288

• 技术交流 • 上一篇    下一篇

GPS、BDS、GPS+BDS精密单点定位精度评估

李建刚1, 李红慧2, 柴祥君3, 王天宇1   

  1. 1. 浙江省测绘科学技术研究院, 浙江 杭州 310012;
    2. 江苏煤炭地质局, 江苏 常州 213000;
    3. 浙江省国土空间规划研究院, 浙江 杭州 310012
  • 收稿日期:2020-09-20 出版日期:2021-09-25 发布日期:2021-10-11
  • 作者简介:李建刚(1981-),男,主要从事海洋测绘、工程测量、大地测量、不动产测绘生产与研究工作。E-mail:lijiangangcehui1@sina.com

Accuracy evaluation of GPS, BDS and GPS+BDS precise point positioning

LI Jiangang1, LI Honghui2, CHAI Xiangjun3, WANG Tianyu1   

  1. 1. Zhejiang Institute of Surveying and Mapping Science and Technology, Hangzhou 310012, China;
    2. Jiangsu Bureau of Coal Geology, Changzhou 213000, China;
    3. Zhejiang Research Institute of Territorial Spatil Planing, Hangzhou 310012, China
  • Received:2020-09-20 Online:2021-09-25 Published:2021-10-11

摘要: 由于北斗系统卫星正式完成组网,因此有必要对BDS系统性能进行精度评估与分析。本文选取了MGEX网所采集的31 d观测数据,对比分析了GPS、BDS、GPS+BDS不同情况下静态与动态精密单点定位精度。试验结果表明,GPS和BDS单系统静态PPP在N、E、U方向上的精度分别优于4、4、7 cm;GPS+BDS组合系统静态PPP在N、E、U方向上的精度分别优于3、3、6 cm;GPS单系统动态PPP在N、E、U方向上的精度分别优于5、5、10 cm;BDS单系统动态PPP在N、E、U方向上的精度分别优于5、6、12 cm;GPS+BDS组合系统动态PPP在N、E、U方向上的精度分别优于4、4、8 cm。因此组合系统相对于单系统可提高定位的稳定性和定位精度,尤其在动态PPP的情况下,组合系统的优势更为明显。

关键词: GPS, BDS, 精密单点定位, 单系统, 组合系统

Abstract: In view of the completion of BeiDou satellite network, it is necessary to evaluate and analyze the system performance of BDS. The 31 day observation data collected by multi GNSS experience network is selected to compare and analyze the precision of static and dynamic precise point positioning under different conditions of GPS, BDS and GPS+BDS. The experimental results show that the accuracy of GPS and BDS single system static PPP in N, E, U direction is better than 4, 4, 7 cm, respectively; GPS+BDS combined system static PPP accuracy in N, E, U direction is better than 3, 3, 6 cm; GPS single system dynamic PPP accuracy in N, E, U direction is better than 5, 5, 10 cm; BDS single system dynamic PPP accuracy in N, E, U direction is better than 5, 6, 12 cm; GPS+BDS integrated system dynamic PPP accuracy is better than 4, 4, 8 cm in N, E, U direction. So the integrated system can improve the stability and accuracy of positioning compared with single system, and the advantages of the combined system are more obvious in the case of dynamic PPP.

Key words: GPS, BDS, precise point positioning, single system, composite system

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