Search Help
Long wavelength Earth gravity field model series from satellite tracking data only, spherical harmonic representation

Abstract: GRIM4-S global gravity field models are based on the analysis of satellite
orbit perturbations from optical, doppler, laser and GPS-SST tracking data of
about 30 satellites. The models are given as a set of fully normalized
spherical harmonic coefficient complete to degree and order 50 with for the
most recent models higher degree terms within resonant orders.

The first solution GRIM4-S1 includes from 27 satellites. This model has been
augmented by additional data leading to the GRIM4-S2 (29 satellites), GRIM4-S3
(30 satellites) and GRIM4-S4 (32 satellites) solutions.
Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Originating Center
Data Center
Geo Research Center Potsdam, Germany Supplemental Info
Data Center URL:
Dataset ID: GRIM4-S

Data Center Personnel
Phone: +49 331 288 1130
Email: psch at
Contact Address:
GeoForschungsZentrum Potsdam
Telegrafenberg A 17
City: Potsdam
Postal Code: D-14473
Country: GERMANY
Phone: +33 61 332980
Contact Address:
18, Avenue Edouard Belin
City: Toulouse Cedex
Postal Code: 31055
Country: France
View entire list
Schwintzer, P., Reigber, Ch., Massmann, F.-H., Barth, W.,
Raimondo; J.C., Gerstl, M., Li, H. (DGFI/I), and Biancale, R.,
Balmino, G., Moynot, B., Lemoine, J.M., Marty, J.C.,
Boudon, Y., Barlier, F. (GRGS): A New Earth Gravity Model in
Support of ERS-1 and SPOT-2: GRIM4-S1/C1. Final Report to the German
Space Agency (DARA) and the French Space Agency (CNES), DGFI/GRGS,
Muenchen/Toulouse 1991
View entire list
Extended Metadata Properties
(Click to view more)

Creation and Review Dates
Last DIF Revision Date: 2017-08-23