Correction on Effect of Earth’s Oblateness in Inversion of GPS Occultation Data  

作　　者：XU Xiaohua LI Zhenghang LUO Jia 

机构地区：[1]School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China [2]不详

出　　处：《Geo-Spatial Information Science》2005年第4期247-250,256,共5页地球空间信息科学学报（英文）

基　　金：Funded by the Opening Foundation of the Key Laboratory of Geospace Environment and Geodesy of the Ministry of Education(03-04-09).

摘　　要：By using observed CHAMP orbit ephemeredes and MSISE90 dry air model and regarding the earth as a sphere and an ellipsoid respectively, phase delays are simulated and the simulated data are retrieved under different schemes. The comparison between the inverted temperature profiles and the model temperature profiles shows that by inverting observed data, we will get temperature results with large errors if the effect of Earth’s oblateness is omitted. The correction method is proved to be effective because the temperature errors decreased obviously with this method.By using observed CHAMP orbit ephemeredes and MSISE-90 dry air model and regarding the earth as a sphere and an ellipsoid respectively, phase delays are simulated and the simulated data are retrieved under different schemes. The comparison between the inverted temperature profiles and the model temperature profiles shows that by inverting observed data, we will get temperature results with large errors if the effect of Earth＇s oblateness is omitted. The correction method is proved to be effective because the temperature errors decreased obviously with this method.

关 键 词：OCCULTATION INVERSION Earth＇s oblateness 

分 类 号：P228.4[天文地球—大地测量学与测量工程]