9 Result(s)
within
T. Mayer-Gürr
English
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Article
Comparison of GOCE-GPS gravity fields derived by different approaches
Several techniques have been proposed to exploit GNSS-derived kinematic orbit information for the determination of long-wavelength gravity field features. These methods include the (i) celestial mechanics appr...
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Chapter and Conference Paper
New Approach to Estimate Time Variable Gravity Fields from High-Low Satellite Tracking Data
Estimating the time-variable gravity field signal has become an important task in climate research. Different scientific communities rely on the produced time series of gravity field information to investigate...
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Chapter and Conference Paper
Downward Continuation of Airborne Gravimetry and Gradiometry Data Using Space Localizing Spline Functions
Airborne gravimetry is capable of filling the gap between the long wavelength parts of the gravity field provided by the satellite missions such as CHAMP or GRACE and the short wavelength parts derived from te...
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Chapter and Conference Paper
Do We Need New Gravity Field Recovery Techniques for the New Gravity Field Satellites?
The classical approach of satellite geodesy consists in deriving the spherical harmonic coefficients representing the gravitational potential from an analysis of accumulated orbit perturbations of artificial s...
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Chapter
Global gravity field recovery by merging regional focusing patches: an integrated approach
Usually the gravity potential is modelled by a spherical harmonic expansion. Simulation tests and real-data investigations based on POD (precise orbit determination) and SST (satellite-to-satellite tracking) d...
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Article
Bayesian inference in satellite gravity inversion
To solve a geophysical inverse problem means applying measurements to determine the parameters of the selected model. The inverse problem is formulated as the Bayesian inference. The Gaussian probability densi...
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Article
ITG-CHAMP01: a CHAMP gravity field model from short kinematic arcs over a one-year observation period
Global gravity field models have been determined based on kinematic orbits covering an observation period of one year beginning from March 2002. Three different models have been derived up to a maximum degree of
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Chapter and Conference Paper
Gravity Field Recovery and Validation by Analysis of Short Arcs of a Satellite-to-Satellite Tracking Experiment as CHAMP and GRACE
A procedure for gravity field determination is presented based on the analysis of short arcs of low flying satellites as CHAMP and GRACE. The analysis technique can be applied to high-low as well as to low-low...
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Chapter and Conference Paper
On the Iterative Solution of Ill-Conditioned Normal Equations by the Use of Lanczos Methods
The determination of the earth’s exterior gravity field from noisy satellite observations lacks stability, due to the downward continuation process and due to data gaps. This property translates into an ill-co...
