利用中国地壳运动监测网络CMONOC中85个测站的GPS观测数据,建立3种常用的区域电离层模型:多项式函数模型(polynomial model,POLY)、低阶球谐函数模型(low-degree spheric function model,LSF)和球冠谐函数模型(spheric cap harmonic mod...
supported by the National Natural Science Foundation of China (Grant No.10603011 and 41174023);the National High Technology Research and Development Program of China (Grant No.2009AA12Z307);Science and Technology Commission of Shanghai Municipality (Grant Nos.05QMX1462 and 08ZR1422400);the Youth Foundation of Knowledge Innovation Project of the Chinese Academy of Sciences;Shanghai Astronomical Observatory (Grant No.5120090304)
The tropospheric delay is one of the main error sources for radio navigation technologies and other ground-or space-based earth observation systems. In this paper, the spatial and temporal variations of the zenith tro...
supported by the National Natural Science Foundation of China (Grant No.10603011);the National High Technology Research and Development Program (Grant No.2009AA12Z307);the Science and Technology Commission of Shanghai Municipality (Grant Nos.05QMX1462 and 08ZR1422400);the Youth Foundation of Knowledge Innovation Project of the Chinese Academy of Sciences,Shanghai Astronomical Observatory (Grant No.5120090304)
The problems of ITRF2008,the latest International Terrestrial Reference Frame,are pointed out and analyzed as follows:(1) ITRF is not a mm-level Terrestrial Reference Frame;(2) the origin of ITRF is neither the Earth'...