Karl Heinz Ilk

University of Bonn

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Torsten Mayer‐Gürr

Graz University of Technology

Annette Eicker

HafenCity University Hamburg

Reiner Rummel

Technical University of Munich

Martin Feuchtinger

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Jürgen Kusche

University of Bonn

Anno Löcher

University of Bonn

S. Rudolph

University of Bonn

P. Schwintzer

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Ch. Reigber

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Jakob Flury

Leibniz University Hannover

Cooperative Institutions

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Technical University of Munich

University of Bonn

GTx (United States)

In-Q-Tel

Delft University of Technology

Japan External Trade Organization

Institute of Geodesy and Geophysics

University of Stuttgart

Federal Agency for Cartography and Geodesy

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

An Integrated Global/Regional Gravity Field Determination Approach based on GOCE Observations

Springer eBooks (2006)

Annette Eicker Torsten Mayer‐Gürr Karl Heinz Ilk

Gravity of Earth

Geopotential

10.1007/3-540-29522-4_16

Cite

Citations (4)

A Validation Procedure for Satellite Orbits and Force Function Models Based on a New Balance Equation Approach

Springer eBooks (2008)

Anno Löcher Karl Heinz Ilk

Force balance

10.1007/978-3-540-49350-1_42

Cite

Citations (6)

Investigations on the polar gap problem in ESA's gravity field and steady-state ocean circulation explorer mission (GOCE)

Journal of Geodynamics (2002)

S. Rudolph Jürgen Kusche Karl Heinz Ilk

Geopotential

Gravimetry

Polar motion

Gravity of Earth

Orbit (dynamics)

10.1016/s0264-3707(01)00055-2

Cite

Citations (18)

A global CHAMP gravity field by merging of regional refinement patches

Annette Eicker Torsten Mayer‐Gürr Karl Heinz Ilk

The usual way of modeling the global gravity field is by means of spherical harmonics. A disadvantage of this kind of gravity field representation is the lack of flexibility in modeling the inhomogeneous gravity field features in specific regions with different roughness. As an alternative the gravity field can be modeled by space localizing base functions as harmonic splines. The advantage of this method is the possibility of adjusting the spline representation and the recovery procedure according to the regional gravity field structures and the specific data distribution. Subsequently, several regional solutions with global coverage can be merged to obtain a global solution. A spherical harmonic representation, in principle up to an arbitrary maximum degree, can be obtained as well by means of quadrature methods in a direct way avoiding the inverse procedure. Such a global refinement from a combination of regional refinement patches is presented in the following. It is based on our CHAMP gravity field ITG-CHAMP01K derived from one year of kinematical CHAMP orbits. The refinement strategy reveals that a regional recovery technique enables the extraction of additional information out of the given data set and therefore leads to a considerable improvement of the global solution. Citation.A. Eicker, T. Mayer-Guerr, K.H. Ilk: A global CHAMP gravity field by merging of regional refinement patches, CHAMP/GRACE Science Team Meet. 2004, published online, www.gfz-potsdam.de/pb1/JCG, 2005

Representation

Source

Cite

Citations (4)

Satellite-to-satellite tracking, satellite gravity gradiometry.

Karl Heinz Ilk

Satellite Tracking

Source

Cite

Citations (0)

Regional gravity field recovery from GOCE gradiometer measurements and SST-high-low observations - a simulation study

EGS - AGU - EUG Joint Assembly (2003)

Torsten Mayer‐Gürr Karl Heinz Ilk Annette Eicker

Gravimetry

Source

Cite

Citations (3)

Ekliptik- und Äquatorsystem

Grundlagen der physikalischen und mathematischen Geodäsie (2021)

Karl Heinz Ilk

10.1007/978-3-662-62367-1_4

Cite

Citations (1)

Global gravity field recovery by merging regional focusing patches: an integrated approach

Springer eBooks (2008)

Karl Heinz Ilk Annette Eicker Torsten Mayer‐Gürr

Semiclassical gravity

Vertical deflection

10.1007/978-3-540-49350-1_49

Cite

Citations (3)

Simulated Multiple Formation Flights for Future Gravity Field Recovery

EGUGA (2009)

Basem Elsaka Karl Heinz Ilk

A study of the Earth’s gravity field recovery from Satellite-to-Satellite Tracking (SST) data of simulated formation flight missions is presented. New scenarios of multiple formation flights with near-polar and near-circular satellites’ orbits will be examined. This is done by the combination of various satellite configurations such as GRACE-type scenarios with Cartwheel-type and Pendulum-type missions (e.g. satellite A and B of Swarm mission). The main focus of this study is based upon the use of short arcs of the dedicated formation flights, tailored especially to the recovery of Earth’s gravity field solutions. The observation equations are set up for each short arc as applied in the calculation of ITG-GRACE03s gravity field model. The numerical simulations are performed with the Gravity Recovery Object Oriented Programming System (GROOPS) software package, which has been developed at the Department of Astronomical, Physical and Mathematical Geodesy, University of Bonn. The results are analyzed in the spatial wavelength spectrum of the static gravity field. Aliasing effects and ocean tidal models are considered in this study as time-variants gravity field.

Gravity of Earth

Source

Cite

Citations (2)

Do We Need New Gravity Field Recovery Techniques for the New Gravity Field Satellites?

Springer eBooks (2008)

Karl Heinz Ilk Anno Löcher Torsten Mayer‐Gürr

Gravity of Earth

Orbit (dynamics)

Orbit Determination

10.1007/978-3-540-74584-6_1

Cite

Citations (7)