The last estimate of the Italian quasigeoid, ITALGEO95, has been accomplished during the first half of 1995. This new computation has been based on a revised data set of gravity covering the area of latitude between 36° and 47° and longitude between 6° and 19°, and an implemented DTM, having a grid mesh of nearly 250m. The method used to get the estimate is the remove-restore technique (with some minor modifications) plus Fast Collocation which allows to obtain the solution over the entire area in one step only. The final product has a regular grid of 3' x 3' . This quasigeoid has been tested with GPS/leveling mesurements which showed a good agreement with it; string improvements have been reached both with respect to pure geopotential model (OSU91A) and the previous Italian geoid (ITALGEO90).
The new italian quasigeoid: ITALGEO 95
SGUERSO, DOMENICO;
1996-01-01
Abstract
The last estimate of the Italian quasigeoid, ITALGEO95, has been accomplished during the first half of 1995. This new computation has been based on a revised data set of gravity covering the area of latitude between 36° and 47° and longitude between 6° and 19°, and an implemented DTM, having a grid mesh of nearly 250m. The method used to get the estimate is the remove-restore technique (with some minor modifications) plus Fast Collocation which allows to obtain the solution over the entire area in one step only. The final product has a regular grid of 3' x 3' . This quasigeoid has been tested with GPS/leveling mesurements which showed a good agreement with it; string improvements have been reached both with respect to pure geopotential model (OSU91A) and the previous Italian geoid (ITALGEO90).
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