GNSS Phase Altimetry of the Sea Level: Numerical Simulation of the Echoes from Waving Sea

Авторы: Ilyushin Y.A., Padokhin A.M.
Сборник: Proceedings of VI International conference "ATMOSPHERE, IONOSPHERE, SAFETY"
Том: 1
Тезисы
Глава в коллективной монографии
Год издания: 2018
Место издания: IMMANUEL KANT BALTIC FEDERAL UNIVERSITY Kaliningrad Russia
Первая страница: 110
Последняя страница: 112
Аннотация: Numerical simulation of reflections of navigational space-borne radio beacons from undulating sea surface is performed at the main frequency of the Global Positioning System (GPS) L1 (1575.42 MHz). Electromagnetic field has been simulated with the Finite Difference in Time Domain (FDTD) technique for different model spectra of the sea waves (2D simulation code for s-polarized waves). Impact of the surface waves on the mean sea level estimate at the monitoring station location is investigated. Random and systematic errors, in particular related to partial shadowing of the undulating surface at low grazing angles of the sounding wave coming from a GPS beacon, are evaluated and estimated. Approaches to mitigation of the observational errors using auxiliary support data, including local sea waves spectra recorded in situ, context images/footage video of the surrounding aquatory, local weather conditions (wind speed and so on) are discussed.
Добавил в систему: Илюшин Ярослав Александрович

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