Logo Leibniz Universität Hannover
Logo: Sonderforschungsbereich geo-Q
Logo Leibniz Universität Hannover
Logo: Sonderforschungsbereich geo-Q
  • Zielgruppen
  • Suche

B07 - System studies for an optical gradiometer mission

The main focus of this project is to carry out theoretical studies and simulations characterizing the future potential of space gradiometry when applying new (i.e., optical) technology. Gravitational gradiometers provide a high-sensitivity signal that allows the reconstruction of the static gravity field from space with high spatial resolution down to 50 – 80 km. GOCE, for example, used six test masses to measure 2nd derivatives of the gravitational potential using an electrostatic read-out of the test masses. By replacing the electrostatic readout with laser-interferometric techniques, such as have been developed for LISA Pathfinder and LISA, the resolution and noise-level can be significantly improved and even the recovery of temporal variations of the gravity field might become possible. By adding one more test mass in the center, 3rd derivatives could be determined. While a parallel project, A07, aims to develop instrumentation components of such a gradiometer, here the system-level implications will be studied in detail, e.g., the optimal configuration of test masses, processing of raw data, separation of the centrifugal part, drift behavior, measurement bandwidth and dynamic range.



Scientists working on this project

Karim Douch
email: douchife.uni-hannover.de

phone: +49 511 762-5697

Brigitte Kaune
email: brigitte.kauneaei.mpg.de

phone: +49 511 762-17279

Dr. Akbar Shabanloui
email: shabanlouiife.uni-hannover.de

phone: +49 511 762-5149

Selected Publications

Peer-Reviewed Literature

Shabanloui A. and Müller J. (2016): Mass variations in the Siberian permafrost region based on new GRACE results and auxiliary modeling, International Association of Geodesy Symposia, pp. 1–8.
DOI: 10.1007/1345_2015_186

Naeimi M., Flury J. and Brieden P. (2015): On the regularization of regional gravity field solutions in spherical radial base functions, Geophys J Int 202(2):1041-1053
DOI: 10.1093/gji/ggv210

Presentations, Talks and Posters

Douch K., Müller J., Heinzel G., Brieden P. and Shabanloui A. (2016): Performance assessment of an optical gradiometer for future gravitational missions, 2016 European Space Agency Living Planet Symposium, Prague, Czech Republic, 9 - 13 May, 2016

Douch K., Wu H., Müller J., Shabanloui A., Brieden P. and Heinzel G. (2016): A first performance assessment of two new concepts of satellite gravitational gradiometers, International Symposium on Gravity, Geoid and Height Systems, Thessaloniki, Greece, 19 - 23 September, 2016

Douch K., Müller J., Brieden P., Shabanloui A. (2015): Study of an optical gradiometer for future satellite gravitational missions, Geodätische Woche / INTERGEO 2015, Stuttgart, Germany

Douch K., Müller J., Heinzel G., Brieden P., Shabanloui A. and Wu H. (2015): System studies for an optical gradiometer mission, geo-Q Kickoff Meeting, Bremen

Douch K., Panet I., Foulon B., Christophe B. (2015): Feasibility and performance assessment of a new gravitational gradiometer for airborne surveys, 26th General Assembly of the International Union of Geodesy and Geophysics, Prague, Czech Republic, 22 June - 02 July, 2015 more