CAJ | 학술논문

利用中国854个GPS/水准点数据对EGM2008和EGM96两个重力场模型的精度进行了比较,结果表明,由模型计算得到的大地水准面高与实测值之间存在着明显的系统差,经系统差改正后,两模型得到的大地水准面的精度有明显的提高.采用西部289个GPS/水准点进行解算,剔除系统差前后两个模型的精度情况统计结果表明,在西部地区EGM2008要比EGM96符合得更好.
이용중국854개GPS/수준점수거대EGM2008화EGM96량개중력장모형적정도진행료비교,결과표명,유모형계산득도적대지수준면고여실측치지간존재착명현적계통차,경계통차개정후,량모형득도적대지수준면적정도유명현적제고.채용서부289개GPS/수준점진행해산,척제계통차전후량개모형적정도정황통계결과표명,재서부지구EGM2008요비EGM96부합득경호.
The accuracies of the EGM2008 and EGM96 are compared by using the 854 GPS/leveling observations in China area.The results show that there is the evident systematic error between the geoids heights derived from the models and those from the observations. When the systematic errors are removed, the accuracies of EGM2008 and EGM96 are all improved. The 289 GPS/leveling observations in the western China are calculated, it is indicated that the EGM2008 is better than EGM96 in the western China.