000193224 001__ 193224
000193224 003__ CZ-ZdVUG
000193224 005__ 20190211101947.0
000193224 044__ $$axr
000193224 041__ $$aeng
000193224 040__ $$aABC039$$bcze
000193224 1001_ $$aHolota, Petr
000193224 24510 $$aCombining terrestrial data and satellite-only models in Earth’s gravity field studies: optimization and integral kernels
000193224 5203_ $$9eng$$aIn gravity field studies satellite-only models and terrestrial data may successfully complement each other. Potential theory forms the respective basis, but the problem considered is overdetermined by nature. In this paper, therefore, methods for solving boundary-value problems are used together with optimization concepts. The compatibility of the two data sources is examined and the representation of the optimized solution is investigated. In the first stage the solution is expressed by series of spherical harmonics and their summation is approached by numerical techniques directly. Subsequently, mathematical analysis aspects are given more attention. Properties of the series are discussed with the aim to find a way for their closed form representation. This results in the respective integral kernels (Green’s functions) for the problem discussed. The integral representation of the solution gives a better insight into the role, which the input data have in the global and the local modelling of the gravity field. Thus it also illustrates more clearly the contribution of the terrestrial data to the optimized solution. Numerical examples and real case studies are added. Terrestrial data and GOCE based models are used for this purpose.
000193224 655_4 $$aanotace
000193224 653_0 $$agravity field
000193224 7001_ $$aNesvadba, Otakar
000193224 7730_ $$92016
000193224 85642 $$uhttps://www.rvvi.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F16%3AN0000050%21RIV17-GA0-00025615
000193224 910__ $$aABC039
000193224 980__ $$aclanky_vugtk
000193224 985__ $$aholota
000193224 985__ $$aanotace
000193224 985__ $$ariv
000193224 985__ $$autvar24