Combination of GPS/leveling and the gravimetric geoid by using the thin plate spline interpolation technique via finite element method
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Piroska Zaletnyik
Abstract
The purpose of this paper is to develop an improved local geoid model for Hungary combining GPS and leveling height data with a local gravimetric geoid model, via corrector surface, which accounts for datum inconsistencies, long-wavelength geoid errors and vertical network distortions. The improved model is the so-called GPS-gravimetric geoid, which can be constructed by adding the corrector surface to the original gravimetric geoid. The corrector surface can be represented by means of a Thin Plate Spline Interpolation (TPSI) and finite element solution. In this work 194 GPS/leveling points with a local gravimetric geoid were used to calculate the corrector surface and the combined geoid model. To estimate the realistic error of the solution 110 GPS/ leveling points were used as external control points. Attention is called to the importance of the homogeneous distribution of the GPS/leveling data. The mean accuracy of geoid heights of the used 110 control stations was 1–2 cm after the surface fitting.
© de Gruyter 2007
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Articles in the same Issue
- High precision kinematic surveying with laser scanners
- An accurate nonlinear stochastic model for MEMS-based inertial sensor error with wavelet networks
- Identification and analysis of crustal motion and deformation models in the Sichuan-Yunnan region
- How groundwater withdrawal and recent tectonics cause damages of the earth's surface: Monitoring of 3D site motions by GPS and terrestrial measurements
- Combination of GPS/leveling and the gravimetric geoid by using the thin plate spline interpolation technique via finite element method
- Technical Report: Determination of the orthometric height inside Mosul University campus by using GPS data and the EGM96 gravity field model
- News Section: IAG Commission 4 “Positioning and applications”: Structure and activities in 2007–2011
