ESTIMATION PROCEDURE
The estimation of the GFZ95A model is performed by a least squares harmonic iteration
scheme. Except of an improved weighting scheme, this procedure also was applied for the
GFZ93 models. The processing can be subdivided into the data preparation, the normal
equations generation and solution sections (see Figure 3).
GRID DATA BASE I SPHERICAL HARMONICS SERIES DATA BASE
Mean Gravity
Anomalies Data Sets
TUG87 Topography
A-Prlorl Gravity Field .
Mean Sea Surface
r. Height Models
Sea Surface Topography
-II
Models (Levltus,Feron)
:.:
. .:.:--"
Fig 3: High Resolution Gravity Field Processing Scheme
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