Spectral behavior of global gravitational models considering EUVN network

摘要

Spectral behavior of Earth's gravitational models is analyzed considering EUVN network. Earth's gravitational models CG01 c, CHAMP03s, GGMOlc, GRACE02s, EGM96s and EGM96 are used. To judge their inside structure their spectral behavior in discreet EUVN points is analyzed. Spectral behavior of CHAMP/ GRACE/terrestrial data Earth's gravitational model CGO 1 c in high resolutions spectrum part is showing inside fluctuations of recent global gravitational models. It is giving opportunity to judge inside accuracy of the model. To have overview in behavior of global models not only in discreet points, but on the territory of Europe, animation of spectral development of CGOlc in 15'×l5'undulations raster over the Europe is made. Big errors of EUVN network are checked considering CG0lc, EGM96 and EGG97 gravitational models. Connections between EUVN and global models datums are analyzed. One of the recent CHAMP/GRACE/terrestrial data model CG0lc developed up to 360 degree and order is put in focus as a model that can replace models before CHAMP/GRACE era.