One of the purposes of the GOCE data analysis is to derive a GOCE-only gravity field model. To this aim satellite gradiometry has to be complemented with satellite tracking data in order to estimate the low degrees of the geopotential spherical harmonic expansion. In this paper a full space-wise solution based on simulated GOCE data is presented. In particular, kinematic orbits are used for the determination of the low degree coefficients of the geopotential. This implies a preprocessing of these orbits for data gap interpolation, outlier detection and velocity estimation from satellite positions. The accuracy of the final spherical harmonic coefficients confirms that the proposed method can be used to produce a GOCE-only solution based on kinematic orbits. This solution is less accurate than the solution based on reduced dynamic orbits, but it is less dependent on a-priori information.

A simulated space-wise solution using GOCE kinematic orbits / F. Migliaccio; M. Reguzzoni; N. Tselfes. - LXIX(2010), pp. 55-68.

A simulated space-wise solution using GOCE kinematic orbits

MIGLIACCIO, FEDERICA;REGUZZONI, MIRKO;TSELFES, NIKOLAOS
2010

Abstract

One of the purposes of the GOCE data analysis is to derive a GOCE-only gravity field model. To this aim satellite gradiometry has to be complemented with satellite tracking data in order to estimate the low degrees of the geopotential spherical harmonic expansion. In this paper a full space-wise solution based on simulated GOCE data is presented. In particular, kinematic orbits are used for the determination of the low degree coefficients of the geopotential. This implies a preprocessing of these orbits for data gap interpolation, outlier detection and velocity estimation from satellite positions. The accuracy of the final spherical harmonic coefficients confirms that the proposed method can be used to produce a GOCE-only solution based on kinematic orbits. This solution is less accurate than the solution based on reduced dynamic orbits, but it is less dependent on a-priori information.
GOCE mission; kinematic orbits; satellite gradiometry; space-wise approach.
File in questo prodotto:
File Dimensione Formato  
2010_BGG_Chania2008.pdf

Accesso riservato

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 439.31 kB
Formato Adobe PDF
439.31 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/580779
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact