孟昊霆,张克非,杨震,刘晓阳

• 1:中国矿业大学环境与测绘学院

摘要(Abstract)：

针对Global Pressure and Temperature2/Global Pressure and Temperature 2w(GPT2/2w)模型在亚洲区域对流层延迟估计中的适用性问题,该文基于GPT2/2w模型,结合Saastamoinen模型(分别用GPT2S、GPT2w-1S、GPT2w-5S表示)估计亚洲地区2007—2017年10年的天顶对流层延迟(ZTD)并分析其精度与时空分布。使用欧洲定轨中心(CODE)的ZTD产品来验证模型在亚洲地区的精度。分析结果表明GPT2w-1S模型精度最高,偏差(Bias)为0.88 cm,均方根误差(RMSE)为4.63 cm,GPT2w-5S模型精度次之,GPT2S模型最差。受水汽分布影响,时间上,3种模型精度表现出季节特性,冬季精度最好,夏季精度最差;空间上,3种模型在高海拔地区精度较好,模型精度对纬度的依赖性不明显且纬度对3种模型的影响程度差别不大。

关键词(KeyWords)： 天顶对流层延迟;GPT2模型;GPT2w模型;Saastamoinen模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(41730109)

作者(Author): 孟昊霆,张克非,杨震,刘晓阳

DOI: 10.16251/j.cnki.1009-2307.2020.08.011

参考文献(References)：

• [1] JIN S G,LUO O,REN C.Effects of physical correlations on long-distance GPS positing and zenith tropospheric delay estimates[J].Adv Space Res,2010,46(2):190-195.
• [2] DEO M,EL-MOWAFY A.Comparison of advanced troposphere models for aiding reduction of PPP convergence time in Australia[J].Journal of Spatial Science,2019,64(30):381-403.
• [3] HOPFIELD H S.Two-quartic tropospheric refractivity profile for correction satellite data[J].J Geophys Res,1969,74(18):4487-4499.
• [4] SAASTAMOINEN J.Contribution to the theory of atmospheric refraction[J].Bullet Geodesique,1973,107(1):13-34.
• [5] COLLINS P,LANGLEY R,LAMANCE J.Limiting factors in tropospheric propagation delay error modelling for GPS airborne navigation[C]//Proceedings of the Institute of Navigation 52nd Annual Meeting.[S.l.]:[s.n.],1996:519-528.
• [6] LEANDRO R F,SANTOS M C,LANGLEY R B.UNB neutral atmosphere model:development and performance[C/OL]//Proceedings of ION NTM 2006,2006:564-573[2019-04-09].http://gauss.gge.unb.ca/papers.pdf/ionntm2006.leandro.pdf.
• [7] PENNA N,DODSON A,CHEN W.Assessment of EGNOS tropospheric correction model[J].J Navigat,2001,54(1):37-55.
• [8] LI W,YUAN Y B,OU J K,et al.A new global zenith tropospheric delay model IGGtrop for GNSS applications[J].Chinese Science Bulletin,2012,57(17):2132-2139.
• [9] LI W,YUAN Y,OU J,et al.New versions of the BDS/GNSS zenith tropospheric delay model IGGtrop[J].Journal of geodesy,2015,89(1):73-80.
• [10] 姚宜斌,何畅勇,张豹,等.一种新的全球对流层天顶延迟模型GZTD[J].地球物理学报,2013,56(7):2218-2227.(YAO Yibin,HE Changyong,ZHANG Bao,et al.A new global zenith tropospheric delay model GZTD[J].Chinese Journal of Geophysics,2013,56(7):2218-2227.)
• [11] YAO Y B,HU Y F,YU C,et al.An improved global zenith tropospheric delay model GZTD2 considering diurnal variations[J].Nonlin Processes Geophys,2016,23:127-136.
• [12] 姚宜斌,张顺,孔建.GNSS空间环境学研究进展和展望[J].测绘学报,2017,46(10):1408-1420.(YAO Yibin,ZHANG Shun,KONG Jian.Research progress and prospect of GNSS space environment science[J].Acta Geodaetica et Cartographica Sinica,2017,46(10):1408-1420.
• [13] ZHANG H,YUAN Y,LI W,et al.Assessment of three tropospheric delay models(IGGtrop,EGNOS and UNB3m)based on precise point positioning in the Chinese region[J].Sensors,2016,16(1):122.
• [14] CHEN Q M,SONG S L,ZHU W Y.An analysis of the accuracy of zenith tropospheric zenith delay calculated from ECMWF/NCEP data over Asia[J].Chinese J Geophys,2012,55(3):275-283.
• [15] 黄良珂,刘立龙,姚朝龙,等.基于区域CORS网精密天顶对流层延迟建模方法研究[J].大地测量与地球动力学,2013,33(6):141-144.(HUANG Liangke,LIU Lilong,YAO Chaolong.Modeling for precise zenith tropospheric delay based on regional CORS network[J].Journal of Geodesy and Geodynamics,2013,33(6):141-144.)
• [16] YAO Y B,XU C Q,SHI J B,et al.ITG:a new global GNSS tropospheric correction model[J].Scientific Reports,2015,5:10273.
• [17] 丁茂华,胡伍生.一种优化的基于神经网络的经验ZTD模型[J].测绘通报,2017(1):22-25.(DING Maohua,HU Wusheng.A blind ZTD model based on neural network[J].Bulletin of Surveying and Mapping,2017(1):22-25.)
• [18] BOEHM J,HEINKELMANN R,SCHUH H.Short note:a global model of pressure and temperature foe geodetic applications[J].J Geodesy,2007,81(10):679-683.
• [19] LAGLER K,SCHINDELEGGER M,BOHM J,et al.GPT2:empirical slant delay model for radio space geodetic techniques[J].Geophysical Research Letters,2013,40(6):1069-1073.
• [20] BOHM J,MOLLER G,SCHINDELEGGER M,et al.Development of an improved empirical model for slant delays in the troposphere(GPT2w)[J].GPS Solutions,2015,19(3):433-441.
• [21] JIN S,PARK J U,CHO J H,et al.Seasonal variability of GPS-derived zenith tropospheric delay(1994-2006)and climate implications[J].Journal of Geophysical Research Atmospheres,2007,112(D9):D09110.
• [22] JIN S G,LUO O F,GLEASON S.Characterization of diurnal cycles in ZTD from a decade of global GPS observations[J].J Geodesy,2009,83(6):537-545.
• [23] LIU J,CHEN X,SUN J,et al.An analysis of GPT2/GPT2w+Saastamoinen models for estimating zenith tropospheric delay over Asian area[J].Advances in Space Research,2016,59(3):824-832.