不同接收机北斗天线相位中心改正模型定轨性能分析  

The Orbit Determination Performance Analysis of the Receiver Beidou Antenna with the Different Phase Center Correction Models

作　　者：田静 王乐[1] 解世超 黄观文[1] TIAN Jing;WANG Le;XIE Shichao;HUANG Guanwen(School of Geological Engineering and Geomatics,Chang’an University,126 Yanta Road,Xi’an 710054,China)

机构地区：[1]长安大学地质工程与测绘学院,西安市710054

出　　处：《大地测量与地球动力学》2023年第9期887-892,903,共7页Journal of Geodesy and Geodynamics

基　　金：国家重大科研仪器研制项目(42127802);陕西省重点研发计划(2022KW-09,2022ZDLSF07-12,2021LLRH-06)。

摘　　要：为建立北斗精密定轨接收机天线相位中心改正(phase center correction, PCC)模型最优化策略,首先对GPS的IGb R3和IGb 14标定值进行比较,两组模型值差异较小,表明在未提供北斗接收机天线IGb 14标定值的情况下采用IGb R3标定值代替具有可行性。进一步,设计PCC赋0、GPS L1/L2频点改正值代替、IGb R3标定值代替3组接收机PCC模型分析其对北斗精密定轨的影响。结果表明,接收机天线相位中心偏差(phas center offset, PCO)对精密定轨影响较大,对于北斗三号精密轨道,采用IGb R3模型的结果最优,其平均轨道拟合精度为3.4 cm;使用GPS的L1/L2代替值次之。最新框架下北斗接收机精确PCC模型公布前,推荐采用IGb R3值用于北斗三号精密轨道解算。To establish the optimal strategy for the Beidou precise orbit determination receiver PCC(phase center correction)model,we first compare the IGb R3 and IGb 14 calibration values of GPS,and the small difference between the two sets of model values demonstrates the feasibility of using the IGb R3 instead of the IGb 14 calibration values of the Beidou receiver antennae when they are not provided.Further,we design three sets of receiver PCC models with PCC assignment 0,GPS L1/L2 frequency correction value substitution,and IGb R3 calibration value substitution to analyze their effects on the Beidou precise orbit determination.The results show that the receiver phas center offset(PCO)has a greater influence on the precise orbit determination,and the IGb R3 model has the best result for the Beidou-3 precise orbit,with an average orbit fitting accuracy of 3.4 cm,followed by the L1/L2 substitution value of GPS.It is recommended that using the IGb R3 value for Beidou-3 precise orbit determination before the precise PCC model of the Beidou receiver is published in the latest framework.

关 键 词：北斗 接收机天线 相位中心改正 精密轨道 框架 

分 类 号：P228[天文地球—大地测量学与测量工程]