ERS-1/2 Gravity Field Model Product
Entry ID: ERS.ORB.EGM

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Summary
Abstract: The gravitational geopotential produces the principal
acceleration on Earth. Therefore a precise orbit
restitution applying dynamic methods requires a precise
model of the geopotential with resolution requirements
depending on the altitude of the satellite. The
gravitational acceleration is the gradient of the
gravitational geopotential. Selected ocean tide parameters
and geocentric coordinates ... View entire text
Geographic Coverage
Spatial coordinates   
  N: 82.0   S: -82.0   E: 180.0   W: -180.0

Temporal Coverage
Start Date: 1991-07-30
Quality The quality of a model is described by a vector of
characteristic statistical numbers derived from the
comparison of various quantities and error propagation:


- computation of orbital fits to tracking
observations of various satellites and to crossover
differences
- comparison of computed and observed geostationary
satellite longitude ... View entire text
Ancillary Keywords
Data Set Progress
COMPLETE
Originating Center
Data Center
Earthnet Online, European Space Agency Supplemental Info
Data Center URL: http://earth.esa.int
Dataset ID: ORB.EGM

Data Center Personnel
Name: EARTH OBSERVATION HELP DESK
Phone: +39 06 94180777
Fax: +39 06 94180292
Email: eohelp at esa.int
Contact Address:
ESA/ESRIN
Via G. Galilei
City: Frascati
Postal Code: 00044
Country: Italy
Distribution
Distribution Media: CD-ROM, File server
Personnel
Role: DIF AUTHOR
Phone: +39 06 94180777
Fax: +39 06 94180292
Email: eohelp at esa.int
Contact Address:
ESA/ESRIN
Via G. Galilei
City: Frascati
Postal Code: 00044
Country: Italy
Creation and Review Dates
Last DIF Revision Date: 2005-06-15
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