一种新的全球对流层天顶延迟模型  

A New Global Zenith Tropospheric Delay Model

作　　者：毛健[1,2] 朱长青[1] 郭继发[2] 

机构地区：[1]南京师范大学虚拟地理环境教育部重点实验室,南京市栖霞区文苑路1号210046 [2]天津师范大学城市与环境科学学院

出　　处：《武汉大学学报（信息科学版）》2013年第6期684-688,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41071245);江苏省高校优势学科建设工程资助项目;国家863计划资助项目(2012AA12A204)

摘　　要：利用IGS提供的高精度对流层天顶延迟数据,在全球范围内详细分析对流层延迟在高程及水平方向的变化规律,建立了一种新的全球对流层天顶延迟模型。该模型计算方法简单,只与年积日和位置参数有关,无需气象参数。经检验,新模型的对流层延迟改正精度优于输入标准气象参数的几种常用的对流层延迟模型,满足卫星实时定位和导航的精度要求。In real-time navigation and positioning of the satellite, the zenith tropospheric de- lay model is used to decrease tropospheric delay by requiring meteorological parameters, but this requirement reduces the accuracy of the model. Therefore, we analyze the variation of troposphere in the elevation and the horizontal respectively on the global scale by requiring the high-precision zenith tropospheric delay data which come from IGS. Based on the analy- sis, we put forward a new zenith tropospheric delay model which can meet the need of the re- al-time positioning and navigation of the satellite. The reason is that not only the new model is simple as its input parameters are day of year and location of the station without meteoro- logical parameters but also its accuracy is best compared with several commonly used mod- els.

关 键 词：对流层天顶延迟模型 对流层 GPS定位 

分 类 号：P228.42[天文地球—大地测量学与测量工程]