12 Result(s)
within
Conference Paper
K.H. Ilk
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Chapter and Conference Paper
Pure Geometrical Precise Orbit Determination of a LEO Based on GNSS Carrier Phase Observations
The interest in a precise orbit determination of Low Earth Orbiters (LEOs) especially in pure geometrical mode using Global Navigation Satellite System (GNSS) observations has been rapidly grown. Conventional ...
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Chapter and Conference Paper
A New Approach for Pure Kinematical and Reduced-Kinematical Determination of LEO Orbit Based on GNSS Observations
The geometrical point-wise satellite positions of a Low Earth Orbiter (LEO) equipped with a Global Navigation Satellite System (GNSS) receiver can be derived by GNSS analysis techniques based on hl-SST (high-l...
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Chapter and Conference Paper
Improved Resolution of a GRACE Gravity Field Model by Regional Refinements
The available gravity field models derived from data of the GRACE mission (tapley and Reigber (2001)) have provided us with an unprecedented accuracy in gravity field determination. Nevertheless the projected ...
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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 and Conference Paper
The Use of Energy Balance Relations for Validation of Gravity Field Models and Orbit Determination Results
There is a need for a proper validation procedure of gravity field solutions, especially for those high precise ones which are derived from the dedicated gravity field missions as CHAMP, GRACE and in future GO...
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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
Global Gravity Field Solutions Based on a Simulation Scenario of GRACE SST Data and Regional Refinements by GOCE SGG Observations
GOCE (Gravity Field and Steady-State Ocean Circulation Explorer) has the potential of deriving the global gravity field with unprecedented accuracy in the high resolution spectral part. The usual way is to mod...
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Chapter and Conference Paper
Energy Relations for the Motion of two Satellites within the Gravity Field of the Earth
Energy exchange relations of the satellites’ motion within the gravity field of the Earth as well as integrals of motion seem to be useful as basic models for the determination of field parameters of the gravi...
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Chapter and Conference Paper
Envisaging a new era of gravity field research
The investigation of the Earth’s gravity field will enter a new era at the turn of the forthcoming millenium. Despite the fact that a remarkable improvement of our knowledge of the gravity field has been achie...
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Chapter and Conference Paper
Application of Spherical Wavelets for Regional Gravity Field Recovery — A Comparative Study
This paper is related to the application of spherical wavelets for gravity field recovery from SST/SGG-observations. The questions of geographical truncation and spatial resolution are studied, important for a...
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Chapter and Conference Paper
The Status of Spaceborne Gravity Field Mission Concepts: A Comparative Simulation Study
The spaceborne gravity field mission concepts SST (satellite-to-satellite tracking) and SGG (satellite gravity gradiometry) are considered to have the potential to improve our knowledge of the Earth’s gravity ...
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Chapter and Conference Paper
Satellite gravity gradiometry: A future technique for global high resolution gravity field recovery
One future possibility for obtaining improved high resolution gravity field information, besides the competitive technique of satellite-to-satellite tracking, is satellite gravity gradiometry. In this paper th...
