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 在高精度大地测量GPS数据处理研究和应用领域,电离层二阶项延迟影响不容忽视。采用带有三角级数的曲面拟合模型构建电离层延迟二阶项模型,并结合西安市高精度GPS地面沉降监测数据,分析近五年来该区域电离层总电子含量、一阶项、二阶项延迟的半年与年变化规律及其对定位结果的影响,在电离层二阶项的研究方面获得了一些有意义的结论。 更多还原

【Abstract】 In the area of high precision geodesy research and application,the ionosphere second-order delay cannot be ignored in GPS data—processing.This paper adopts surface model which with trigonometric series to establish the ionospheric second-order delay model,analyses the ionosphere variation in half a year or a year of Xian city in recent five years,and gets some significant conclusions for research of ionospheric second-order terms. 更多还原