Библиотека на Университет по архитектура, строителство и геодезия

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Regional vertical total electron content (VTEC) modeling together with satellite and receiver differential code biases (DCBs) using semi-parametric multivariate adaptive regression B-splines (SP-BMARS)

Murat Durmaz; Mahmut Karslioglu

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ЦБ II 1576

Детайли

Източник
Journal of Geodesy
Издателство
Springer Berlin Heidelberg
Година на издаване
2015
Страници
с.347-360
Том
89
Ключови думи
йоносфера, регионално моделиране, VTEC, BMARS, SP-BMARS
Отрасъл
Общ отдел. Наука. Библ. дело. Енциклопедии
Пор.№
4
Забележка
Рез. от англ. ез.
Анотация
There are various global and regional methods that have been proposed for the modeling of ionospheric vertical total electron content (VTEC). Global distribution of VTEC is usually modeled by spherical harmonic expansions, while tensor products of compactly supported univariate B-splines can be used for regional modeling. In these empirical parametric models, the coefficients of the basis functions as well as differential code biases (DCBs) of satellites and receivers can be treated as unknown parameters which can be estimated from geometry-free linear combinations of global positioning system observables. In this work we propose a new semi-parametric multivariate adaptive regression B-splines (SP-BMARS) method for the regional modeling of VTEC together with satellite and receiver DCBs, where the parametric part of the model is related to the DCBs as fixed parameters and the non-parametric part adaptively models the spatio-temporal distribution of VTEC.
Системен №
4256

Действия