测绘通报 ›› 2020, Vol. 0 ›› Issue (1): 71-75.doi: 10.13474/j.cnki.11-2246.2020.0015

• 学术研究 • 上一篇    下一篇

BDS-3多频点伪距单点定位性能研究

张乾坤1, 刘小生1, 何琦敏2   

  1. 1. 江西理工大学建筑与测绘工程学院, 江西 赣州 341000;
    2. 中国矿业大学环境与测绘学院, 江苏 徐州 221116
  • 收稿日期:2019-04-25 修回日期:2019-10-15 发布日期:2020-02-10
  • 通讯作者: 刘小生。E-mail:lxs9103@163.com E-mail:lxs9103@163.com
  • 作者简介:张乾坤(1995-),男,硕士生,主要研究方向为GNSS高精度数据处理。E-mail:qkZane@163.com

Study on the performance of BDS-3 multi-frequency pseudo-range single point positioning

ZHANG Qiankun1, LIU Xiaosheng1, HE Qimin2   

  1. 1. School of Architectural and Surveying Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
    2. School of Environmental Science and Spatial Informatics, CUMT, Xuzhou 221116, China
  • Received:2019-04-25 Revised:2019-10-15 Published:2020-02-10

摘要: 针对目前有关北斗三号系统伪距单点定位研究较少,未对三号系统多个频点的定位性能进行对比分析的现状,本文利用实测数据对三号系统多个频点的定位性能进行了研究,并联合BDS-2、Galileo进行了同频伪距单点定位试验,统计分析了组合定位多个频点的同频定位结果。试验结果表明:目前三号系统单独定位能力有限,不适合单独定位;BDS-3/Galileo同频组合定位可以弥补BDS-3新频点单频定位时卫星个数不足、数据不完整导致的定位精度过差的情况,同时能够提高Galileo的定位精度;BDS-2/3的B3I频点与BDS/Galileo组合的B2b频点的定位精度均与GPS的L1频点的定位精度相当。

关键词: 北斗三号系统, 单点定位, 同频组合, 可见卫星数, 精度衰减因子

Abstract: Currently, the study on BDS-3 pseudo-range single point positioning (SPP) is insufficiency and there are no comparative analyses about the results of multi-frequency SPP in BDS-3. In this paper, the performance of multi-frequency SPP in BDS-3 are analyzed by using the measured data. In addition, the same frequency SPP experiment of the combination with BDS-2, Galileo are carried out in this paper to analyze the results of the same frequency combination of multi-frequency SPP. The experimental results show that the BDS-3 is unsuitable to positioning independently due to its limited positioning ability at present. The same frequency SPP of the combination BDS-3/Galileo can compensate the poor positioning accuracy caused by the inadequate number of satellites (NSAT) and incomplete data in BDS-3 new frequency SPP, and improve the SPP accuracy of Galileo. The positioning accuracy of the frequency B3I in BDS-2/3 and the frequency B2b in BDS/Galileo are similar to that of the frequency L1 in GPS.

Key words: BDS-3 system, single point positioning, same frequency combination, the number of visible satellite, dilution of precision

中图分类号: