CAJ | 학술논문

利用美国南加州地区多个IGS站4年天顶对流层延迟（ZTD）数据，建立了一种不需要实测气象参数而只与测站高程和年积日有关的区域天顶对流层延迟模型。新模型与基于ECMWF再分析资料和年平均气象参数下的Saastamoinen模型相比，其稳定性和精度都优于Saastamoinen模型，且模型精度随高程的增加而增加。使用新模型预测2012年南加州地区ZTD，其整体精度约为3.86 cm。
이용미국남가주지구다개IGS참4년천정대류층연지（ZTD）수거，건립료일충불수요실측기상삼수이지여측참고정화년적일유관적구역천정대류층연지모형。신모형여기우ECMWF재분석자료화년평균기상삼수하적Saastamoinen모형상비，기은정성화정도도우우Saastamoinen모형，차모형정도수고정적증가이증가。사용신모형예측2012년남가주지구ZTD，기정체정도약위3.86 cm。
In this paper,a new zenith tropospheric delay correction model is established by 4 years of ZTDs from IGS over Southern California,not requiring any meteorological data but related to the site elevation and the day of year.The new model is compared with the Saastamoinen model by ECMWF data and annual average me-teorological parameter when calculated the ZTD.The results show that the stability and precision of the new model are better than Saastamoinen model,and the precision increases with site elevation.The overall accuracy of the new model is about 3.86 cm when used to predict zenith troposhperic delays in 2012 in Southern Califor-nia.