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Каталог "Статии" | Списание

New versions of the BDS/GNSS zenith tropospheric delay model IGGtrop

Wei Li; Yanju Chai; Zishen Li; Yuei-An Liou; Jikun Ou; Ningbo Wang; Yunbin Yuan

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ЦБ II 1576

Детайли

Източник
Journal of Geodesy
Издателство
Springer Berlin Heidelberg
Година на издаване
2015
Пор.№
1
Том
89
Ключови думи
тропосферно закъснение, IGGtrop модел, EGNOS модел, UNB модел, BDS, GNSS
Отрасъл
Общ отдел. Наука. Библ. дело. Енциклопедии
Забележка
Рез. на англ. ез
Анотация
The initial IGGtrop model proposed for Chinese BDS (BeiDou System) is not very suitable for BDS/GNSS research and application due to its large data volume while it shows a global mean accuracy of 4 cm. New versions of the global zenith tropospheric delay (ZTD) model IGGtrop are developed through further investigation on the spatial and temporal characteristics of global ZTD. From global GNSS ZTD observations and weather reanalysis data, new ZTD characteristics are found and discussed in this study including: small and inconsistent seasonal variation in ZTD between 10?Sand10?N and stable seasonal variation outside; weak zonal variation in ZTD at higher latitudes (north of 60?N and south of 40?S ) and at heights above 6 km, etc.
Системен №
4240

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