CAJ | 학술논문

利用IGS站及实测气象参数的Saastamoinen模型来评估EGNOS天顶对流层延迟模型在新疆的精度，研究表明：（1）在新疆地区，EGNOS模型与IGS站数据符合较好，guao站BIAS为0.9 mm，RMS为1 cm；（2）EGNOS模型与实测气象参数的Saastamoinen模型比较分析后发现，两者之间平均BIAS为－7.9 mm，RMS为1.62 cm，BIAS随纬度的增加由负值变为正值，EGNOS模型精度在新疆地区随高程变化稳定，在高程较低处也能保证一定的精度，与其他同纬度不同高程的IGS站相比较，EGNOS模型精度在新疆地区优于其他地区；（3）与ECMWF资料计算的ZTD比较，EGNOS模型RMS优于ECMWF 近3.6 cm。
이용IGS참급실측기상삼수적Saastamoinen모형래평고EGNOS천정대류층연지모형재신강적정도，연구표명：（1）재신강지구，EGNOS모형여IGS참수거부합교호，guao참BIAS위0.9 mm，RMS위1 cm；（2）EGNOS모형여실측기상삼수적Saastamoinen모형비교분석후발현，량자지간평균BIAS위－7.9 mm，RMS위1.62 cm，BIAS수위도적증가유부치변위정치，EGNOS모형정도재신강지구수고정변화은정，재고정교저처야능보증일정적정도，여기타동위도불동고정적IGS참상비교，EGNOS모형정도재신강지구우우기타지구；（3）여ECMWF자료계산적ZTD비교，EGNOS모형RMS우우ECMWF 근3.6 cm。
In this paper,EGNOS zenith tropospheric delay model is evaluated and analyzed by IGS date and Saastamoinen model with meteorological parameters.The results are that:(1 ) In the area of Xinjiang,EGNOS model is IGS date,in the site of guao,the BIAS is 0.9 mm and the RMS is 1 cm.(2)The average BIAS is-7.9 mm and the RMS is 1.62 cm when compared with Saastamoinen model using meteorological parameters. The BIAS changed from negative to positive with latitude increase.The accuracy of EGNOS model is stable with the change of elevation and can guarantee high accuracy in low place. (3 ) When compared with ECMWF date,the RMS of EGNOS is better than ECMWF about 3.6 cm.