【作者】 何倩倩； 张瑞； 刘杨；

【Author】 He Qianqian 1 ,Zhang Rui 2 ,Liu Yang 1 1. Research Center of GNSS, Wuhan University, 129 Luoyu Road, Wuhan 430079, China 2. School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China

【机构】 武汉大学卫星导航定位工程技术研究中心； 武汉大学测绘学院；

【摘要】 目前已有的GNSS系统包括美国的GPS系统,俄罗斯的GLONASS系统,欧盟的GALILEO系统以及我国的BEIDOU系统等,联合使用不同的导航系统进行电离层的监测与预报研究,一方面增加了测站可视卫星的数量,一方面极大的改善了卫星分布,提供了更多和更好的多频观测值,更加有利于区域电离层模型的建立。因为GNSS系统尚未全面建成,故本文通过仿真GPS、GLONASS、GALILEO、BEIDOU等多系统的双频观测值,构建中国区电离层球谐函数模型,并对该区域模型结果进行分析。研究结果表明:利用GNSS多卫星系统观测值建立中国区域电离层球谐函数模型的精度要优于单一系统。更多还原

【Abstract】 GNSS system contains GPS, GLONASS, GALILEO and BEIDOU etc. Using them together is of a great help to increase the number of the satellites can be seen, and also improve satellite distribution, and thus more and better dual observations are given. So it plays a significant role in dealing with building area ionosphere model. Since GNSS system has not been fully completed at all, the dual-frequency observations of GPS, GLONASS, GALILEO and BEIDOU should be simulated, based on which the model of the ionosphere spherical harmonics is being built, and also the regional model results are analyzed, and some concluding remarks are given finally. The result shows that the accuracy of the China area model of the ionosphere spherical harmonics building by GNSS system dual observations is better than that of single system.更多还原