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Regional recovery of the disturbing gravitational potential from satellite based first-, second- and third-order radial derivatives of the disturbing gravitational potential

Citace:
NOVÁK, P., PITOŇÁK, M., ŠPRLÁK, M. Regional recovery of the disturbing gravitational potential from satellite based first-, second- and third-order radial derivatives of the disturbing gravitational potential. San Francisco, USA, 2015.
Druh: PŘEDNÁŠKA, POSTER
Jazyk publikace: eng
Anglický název: Regional recovery of the disturbing gravitational potential from satellite based first-, second- and third-order radial derivatives of the disturbing gravitational potential
Rok vydání: 2015
Autoři: Prof. Ing. Pavel Novák Ph.D. , Ing. Martin Pitoňák Ph.D. , Ing. Michal Šprlák Ph.D. ,
Abstrakt EN: Currently available gravity field-dedicated satellite missions allow for measuring scalar, vectorial (both Gravity Recovery And Climate Experiment) and second-order tensorial (Gravity field and steady-state Ocean Circulation Explorer) quantities of the Earth’s gravitational potential field. Theoretical questions related to the use of moving instruments for the measurements of elements of the third-order gravitational tensor are now under investigation. The gravity field-dedicated satellite mission OPTIMA (OPTical Interferometry for global Mass change detection from space) should measure third-order derivatives of the Earth’s gravitational potential. The main purpose of the presented contribution is an investigation of possibilities of regional recovering the disturbing gravitational potential on the Earth’s surface from spaceborne first-, second- and third-order radial derivatives of the disturbing gravitational potential. The measurements along a satellite orbit at altitude 250 km will be synthetized from global gravity field model EGM2008. The input data will be polluted by white Gaussian noise. The process of downward continuation will be stabilized by Tikhonov regularization. The achieved values of the disturbing gravitational potential we compare with same quantity generated from EGM2008. Last part of this contribution will be discussed the possibilities of joining regional solutions into global coverage as a patchwork.
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