Pregled bibliografske jedinice broj: 134599
Gravity Field Determination Based on the Energy Balance Approach Using Purely Kinematic CHAMP Orbit
Gravity Field Determination Based on the Energy Balance Approach Using Purely Kinematic CHAMP Orbit // 2nd CHAMP Science Meeting, GeoforschungsZentrum
Potsdam, Njemačka, 2003. (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
Gravity Field Determination Based on the Energy Balance Approach Using Purely Kinematic CHAMP Orbit
Autori
Földvary, L. ; Švehla, Dražen ; Gerlach, Ch. ; Wermuth, M. ; Gruber, Th. ; Rummel, R. ; Rothacher, M. ; Frommknecht, B. ; Peters, Th. ; Steigenberger, P.
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Skup
2nd CHAMP Science Meeting, GeoforschungsZentrum
Mjesto i datum
Potsdam, Njemačka, 01.09.2003. - 04.09.2003
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
gravity field determination; energy balance approach; spherical harmonic analysis
Sažetak
We have used one year of CHAMP data for deriving a gravity field model based on the energy balance approach. In order to avoid the use of any a priori gravity information, purely kinematic obit has been computed from GPS measurements only. Subsequently velocities has been derived from these kinematic positions by smoothing splines. Using the principle of energy conservation, the satellite's positions and velocities are transformed into gravitational potential. CHAMP onboard accelerometry is used to correct nonconservative surface forces. For spherical harmonic analysis different methods have been implemented, namely the direct approach and the semianalytical approach. The model, called TUM2S, was found to be a gravity field comparable to the official CHAMP output by GFZ, EIGEN2.
Izvorni jezik
Engleski
Znanstvena područja
Geodezija
