基于北斗卫星导航系统的低轨卫星精密定轨精度分析  

Precision analysis of low-earth-orbit satellite orbit determination based on Beidou Navigation Satellite System

作　　者：宋美娟 李林阳[2] SONG Meijuan;LI Linyang(32020 Troops,Wuhan,Hubei 430000,China;Information Engineering University,Zhengzhou,Henan 450001,China)

机构地区：[1]32020部队,湖北武汉430000 [2]信息工程大学,河南郑州450001

出　　处：《测绘标准化》2024年第3期71-76,共6页Standardization of Surveying and Mapping

基　　金：国家自然科学基金项目(42104033);地理信息工程国家重点实验室开放基金(SKLGIE2023-Z-2-1);博士后科学基金项目(2022M712442)。

摘　　要：随着北斗卫星导航系统的建成运行,基于北斗卫星导航系统的低轨卫星精密定轨得以广泛应用。为有效评估基于北斗卫星导航系统的低轨卫星精密定轨精度,本文分别基于运动学法、动力学法和简化动力学法对低轨星载北斗观测数据进行了精密定轨处理,并通过重叠弧段法进行内符合精度评价,然后采用不同定轨方法对比的方式对精密定轨结果进行了验证分析。试验结果表明,3种精密定轨结果的位置互差均方根误差为1.4 cm,最大位置互差7 cm,说明基于北斗卫星导航系统的精密定轨精度可达到厘米级。With the completion and operation of the Beidou Navigation Satellite System,precision orbit determination of low-orbit satellites based on the Beidou Navigation Satellite System has been widely applied.To effectively evaluate the orbit determination precision of low-orbit satellites based on Beidou Navigation Satellite System,this paper conducts precise orbit determination processing on low-orbit satellite Beidou data using kinematic method,dynamic method and simplified dynamic method respectively.The orbit determination results are verified and analyzed through overlapping orbit difference for internal conformity accuracy and comparison between different orbit determination methods.The experimental results show that error difference RMS between the three precision orbit determination positions is 1.4 cm and the max error difference between the three precision orbit deter‐mination positions is 7cm.This result indicates that precision orbit determination based on the Beidou Navigation Satellite System can achieve centimeter level accuracy.

关 键 词：北斗卫星导航系统 精密定轨 低轨卫星 重叠弧段 

分 类 号：P228.4[天文地球—大地测量学与测量工程]