测绘通报 ›› 2022, Vol. 0 ›› Issue (6): 12-17,39.doi: 10.13474/j.cnki.11-2246.2022.0164.

• 高精度定位 • 上一篇    下一篇

BDS-3+GPS精密单点定位模型及性能分析

陈一彪1,2, 秘金钟2, 谷守周2, 杨李俊2,3, 王洪斌4, 楚彬5,6   

  1. 1. 辽宁工程技术大学, 辽宁 阜新 123000;
    2. 中国测绘科学研究院, 北京 100036;
    3. 山东科技大学, 山东 青岛 266590;
    4. 自然资源部第二大地测量队, 黑龙江 哈尔滨 150025;
    5. 湖南省测绘科技研究所, 湖南 长沙 410007;
    6. 中国测绘科学研究院湖南分院, 湖南 长沙 410007
  • 收稿日期:2021-09-13 发布日期:2022-06-30
  • 通讯作者: 谷守周。E-mail:gusz@casm.ac.cn
  • 作者简介:陈一彪(1997-),男,硕士生,主要研究方向为卫星定位与导航。E-mail:chenyibiao97@163.com
  • 基金资助:
    国家重点研发计划(2021YFC3000504);国家自然基金重点基金(41930535);全球连续监测评估系统项目(CFZX0301040308-06);自然资源部国土卫星遥感应用重点实验室基金(KLSMNR-202109);湖南省大数据与测绘地理信息服务专项(HNGTCH-2021-08)

BDS-3+GPS precise point positioning modeling and performance analysis

CHEN Yibiao1,2, BEI Jinzhong2, GU Shouzhou2, YANG Lijun2,3, WANG Hongbin4, CHU Bin5,6   

  1. 1. Liaoning Technical University, Fuxin 123000, China;
    2. Chinese Academy of Surveying and Mapping, Beijing 100036, China;
    3. Shandong University of Science and Technology, Qingdao 266590, China;
    4. The Second Geodetic Surveying Brigade of Ministry of Natural Resources, Harbin 150025, China;
    5. Hunan Institute of Surveying and Mapping Technology, Changsha 410007, China;
    6. China Academy of Surveying and Mapping in Hunan Branch, Changsha 410007, China
  • Received:2021-09-13 Published:2022-06-30

摘要: 北斗导航卫星系统于2020年7月正式建成并开通,BDS-3卫星在B1I和B3I基础上,增加B1C、B2a民用频率,为验证BDS-3不同频率与GPS组合定位性能,分别对BDS-3(B1C+B2a)+GPS与BDS-3(B1I+B3I)+GPS组合PPP定位性能进行分析,并与BDS-3单系统进行对比。结果表明,在静态定位中,BDS-3(B1C+B2a)+GPS组合在高程方向精度优于2 cm,低于BDS-3(B1I+B3I)+GPS组合;在水平方向精度相当,优于1 cm,收敛时间减少9%;与BDS-3相比,定位精度提高10%~25%,收敛时间减少17%~24%。在动态定位中,BDS-3(B1C+B2a)+GPS与BDS-3(B1I+B3I)+GPS定位精度相当,收敛时间减少14%;与BDS-3相比,BDS-3(B1C+B2a)+GPS动态PPP在高程方向精度优于4 cm,水平方向精度优于3 cm,定位精度提高31%~38%,收敛时间减少52%~58%。

关键词: 精密单点定位, BDS-3, BDS-3+GPS, 定位精度, 收敛时间

Abstract: The BeiDou navigation satellite system is officially completed and put into operation in July 2020. Based on B1I and B3I, the BDS-3 satellite adds B1C and B2a civil frequencies. In order to verify the positioning performance of BDS-3 with different frequencies combined with GPS, the PPP positioning performance of BDS-3(B1I+B3I)+GPS and BDS-3(B1C+B2a)+GPS is analyzed, and compared with that of BDS-3. The results show that in static positioning, the elevation direction accuracy of BDS-3(B1C+B2a)+GPS is lower than that of BDS-3(B1I+B3I)+GPS, the horizontal accuracy is similar, and the convergence time is reduced by 9%; The horizontal accuracy of BDS-3(B1C+B2a)+GPS is better than 1 cm, and the elevation accuracy is better than 2 cm. Compared with BDS-3, the positioning accuracy is improved by about 10%~25%, and the convergence time is reduced by 17%~24%. In kinematic positioning, the positioning accuracy of BDS-3(B1C+B2a)+GPS is equivalent to that of BDS-3(B1I+B3I)+GPS, and the convergence time is reduced by 14%; The horizontal accuracy of BDS-3(B1C+B2a)+GPS is better than 3 cm, and the elevation accuracy is better than 4 cm. Compared with BDS-3, the positioning accuracy is improved by about 31%~38%, and the convergence time is reduced by about 52%~58%.

Key words: precise point positioning, BDS-3, BDS-3+GPS, positioning accuracy, convergence time

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