Acta Geodaetica et Cartographica Sinica
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Abstract: In the area of high precision geodesy research and application, the ionosphere second-order delay cannot be ignored in GPS data-process. This paper adopts surface model which with trigonometric series to establish the ionospheric second-order delay model, then analyses the ionosphere variation in half a year or a year of Xian city in recent five years, finally gets some significant conclusions for research of ionospheric second-order.
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http://xb.chinasmp.com/EN/Y2011/V40/ISup./105