综合时间序列与高程的天顶对流层延迟模型研究

摘要

In this paper , according to fourier function and exponential function , a new zenith tropospheric delay ( ZTD) correction model is established by using 26 IGS sites over Southern California ,which not require any meteorologi-cal data and only related to the elevation and the day of year .The accuracy of the new model to is about 4.31 cm when use to predict zenith troposhperic delays in 2012 ,and the new model in computation less could be in zenith tropospheric delay(ZTD)correction GNSS time positioning .%利用南加州地区26个IGS站的天顶对流层延迟（ ZTD）数据，运用傅里叶函数和指数函数，建立了一种不需要实测气象参数且只与时间序列及高程相关的天顶对流层延迟改正模型。该模型预报2012年 ZTD 平均精度为4.31 cm，计算公式简单，所需参数较少，可作为GNSS实时定位及导航的对流层天顶延迟改正。