大规模低轨星座多普勒定位算法

张雨露; 李桢; 施闯; 景贵飞

doi:10.11959/j.issn.2096-8930.2024009

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大规模低轨星座多普勒定位算法

研究 | 更新时间：2024-06-03

- 大规模低轨星座多普勒定位算法
- Doppler Positioning Performance of LEO Mega Constellation
- 天地一体化信息网络 2024年5卷第1期页码：84-94
- 作者机构：
  
  1. 北京航空航天大学前沿科学技术创新研究院, 北京 100191
  2. 卫星导航与移动通信融合技术工业和信息化部重点实验室，北京 100191
- 作者简介：
  
  [ "张雨露（1997− ），女，北京航空航天大学前沿科学技术创新研究院博士生，主要研究方向为低轨卫星高精度定轨与多普勒定位算法" ]
  [ "李桢（1989− ），男，博士，北京航空航天大学前沿科学技术创新研究院助理研究员，主要研究方向为航天器辐射光压建模、精密定轨及空间碎片预警等" ]
  [ "施闯（1968− ），男，博士，北京航空航天大学前沿科学技术创新研究院教授，主要从事北斗高精度定位导航授时等方面的科研、教学工作" ]
  [ "景贵飞（1968− ），男，博士，北京航空航天大学前沿科学技术创新研究院研究员，主要从事北斗系统、导航与位置服务等方面的科研、教学工作" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(41931075);国家自然科学基金资助项目;The National Natural Science Foundation of China(42204033);中央高校基本科研业务费项目;The Fundamental Research Funds for the Central Universities(YWF-23-JC-12)
- DOI：10.11959/j.issn.2096-8930.2024009
  中图分类号： P228
- 网络出版日期：2024-03，
  
  纸质出版日期：2024-03-20
- 稿件说明：
移动端阅览
张雨露, 李桢, 施闯, 等. 大规模低轨星座多普勒定位算法[J]. 天地一体化信息网络, 2024,5(1):84-94.

Yulu ZHANG, Zhen LI, Chuang SHI, et al. Doppler Positioning Performance of LEO Mega Constellation[J]. Space-integrated-ground information networks, 2024, 5(1): 84-94.
张雨露, 李桢, 施闯, 等. 大规模低轨星座多普勒定位算法[J]. 天地一体化信息网络, 2024,5(1):84-94. DOI： 10.11959/j.issn.2096-8930.2024009.

Yulu ZHANG, Zhen LI, Chuang SHI, et al. Doppler Positioning Performance of LEO Mega Constellation[J]. Space-integrated-ground information networks, 2024, 5(1): 84-94. DOI： 10.11959/j.issn.2096-8930.2024009.

摘要

基于典型的Starlink星座构型，对大规模低轨星座多普勒定位算法展开研究。实验结果表明，理想条件下低轨星座多普勒单点定位精度可以在3～6 m。为保证米级的定位精度，低轨卫星的位置精度和速度精度应为米级每秒或厘米级每秒。C频段信号受到的电离层误差若不做改正，将导致定位精度变差2 m左右。对流层误差将使得定位结果变差几十米。此外，使用轨道高度为550 km的低轨卫星的多普勒频移定位时，接收机的初值误差应小于300 km，否则部分历元将不能收敛到正确的接收机位置。

Abstract

This paper proposed a Doppler-only point-solution algorithm and analyzed the Doppler positioning performance based on the Starlink constellation.The Doppler positioning accuracy was about 3～6 m.To achieve the meter-level positioning accuracy

the satellite position and velocity errors should be within several meters and several centimeters per second

respectively.The ionospheric delay rates of C-band signal would cause about 2 m error in Doppler positioning.The positioning error would increase by dozens of meters if there were no corrections for the tropospheric errors.To ensure convergence in the LEO-based Doppler positioning

the initial receiver position error should be less than 300 km when the satellites orbit at an altitude of 550 km.

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