测绘通报 ›› 2024, Vol. 0 ›› Issue (11): 83-89.doi: 10.13474/j.cnki.11-2246.2024.1115

• 工程测量分会年会优选论文 • 上一篇    

顾及GEO轨道特性的BDS相对定位研究

王天乐1, 高成发1, 魏建雄2   

  1. 1. 东南大学交通学院, 江苏 南京 211189;
    2. 南京市计量监督检测院, 江苏 南京 211106
  • 收稿日期:2024-07-24 发布日期:2024-12-05
  • 通讯作者: 高成发,E-mail:gaochfa@seu.edu.cn
  • 作者简介:王天乐(2002-),男,硕士,主要研究方向为GNSS高精度定位。E-mail:1690579462@qq.com
  • 基金资助:
    星地联合增强多频多系统GNSS高精度定位研究(JLY2024001)

A study on relative positioning of BDS considering GEO orbital characteristics

WANG Tianle1, GAO Chengfa1, WEI Jianxiong2   

  1. 1. School of Transportation, Southeast University, Nanjing 211189, China;
    2. Nanjing Institute of Measurement and Testing technology, Nanjing 211106, China
  • Received:2024-07-24 Published:2024-12-05

摘要: 针对BDS系统动态相对定位较少顾及GEO轨道特性的问题,本文分析了GEO卫星空间信号质量和观测值质量,顾及GEO轨道特性,基于站间单差残差和降权因子改善随机模型;并验证分析了剔除全部GEO和部分GEO情况下的定位性能。试验结果表明,顾及GEO轨道特性剔除部分GEO卫星并对随机模型进行改善,能够保证观测卫星数量,提升了模糊度固定率和动态相对定位精度。

关键词: GEO卫星, 动态相对定位, BDS, 随机模型

Abstract: Considering the issue that dynamic relative positioning of the BDS system rarely takes GEO orbital characteristics into account, this paper analyzes the spatial signal quality and observation value quality of GEO satellites. By considering GEO orbital characteristics, the stochastic model is improved based on inter-station single-difference residuals and a downweighting factor. The positioning performance is verified and analyzed under the conditions of excluding all GEO satellites and excluding some GEO satellites. The experimental results show that considering the GEO orbital characteristics, excluding some GEO satellites, and improving the stochastic model can ensure the number of observed satellites, enhance the ambiguity resolution rate, and improve the accuracy of dynamic relative positioning.

Key words: GEO satellites, RTK, BDS, stochastic model

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