摘要
分析GPS和BDS-3卫星广播星历的误差特性,研究广播星历精度不足的补偿策略,提出一种SISRE补偿的非差非组合定位模型。采用2022年15个MGEX测站1周的数据进行实验。结果表明,SISRE补偿的非差非组合模型的GPS和BDS-3静态三维定位误差的RMS分别约为24 cm和23 cm, GPS/BDS-3双系统组合可进一步将精度提升至约18 cm;GPS和BDS-3仿动态三维定位误差的RMS分别约为73 cm和74 cm, GPS/BDS-3双系统组合可进一步将精度提升至约45 cm;SISRE补偿的非差非组合模型与SISRE补偿的无电离层组合模型定位精度相当。
We analyze the error characteristics of GPS and BDS-3 satellite broadcast ephemeris,study the compensation strategy of the inaccuracy of broadcast ephemeris,and propose a SISRE compensated undifferenced uncombined positioning model.The experiment adopts the observation data of 15 MGEX stations in 2022 for one week.The results show that when a SISRE compensated undifferenced and uncombined model is adopted,the RMS of GPS and BDS-3 static three-dimensional positioning errors are about 24 cm and 23 cm,respectively.The GPS/BDS-3 dual system combination can further improve the accuracy to about 18 cm.The RMS of GPS and BDS-3 imitation dynamic 3D positioning errors are about 73 cm and 74 cm,respectively.The GPS/BDS-3 dual system combination can further improve the accuracy to about 45 cm.The positioning accuracy of SISRE compensated undifferenced and uncombined model is equivalent to that of SISRE compensated ionosphere-free combination model.
作者
彭华东
乔书波
李林阳
杨显赐
宋开放
徐海龙
PENG Huadong;QIAO Shubo;LI Linyang;YANG Xianci;SONG Kaifang;XU Hailong(School of Surveying and Mapping,Information Engineering University,62 Kexue Road,Zhengzhou 450001,China;231121 Troops of PLA,Nanjing 210001,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2023年第12期1281-1287,共7页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(42074010)。
