Orbit modeling related to cartwheel geometry. - Ulrich Gebhardt; Otmar Loffeld; Holger Nies; Valerij Peters (IGARSS, 2003)

Orbit estimation of the interferometric cartwheel using an extended linearized Kalman filter. - Holger Nies; Otmar Loffeld; Ulrich Gebhardt; Valerij Peters (IGARSS, 2003)

Orbit tracking and interpolation using a realistic gravitation model. - Ulrich Gebhardt; Otmar Loffeld; Marc Kalkuhl; Holger Nies; Stefan Knedlik (IGARSS, 2004)

A data fusion approach for distributed orbit estimation. - Holger Nies; Otmar Loffeld; Stefan Knedlik; Ulrich Gebhardt; Wolfgang Wiechert (IGARSS, 2004)

Bistatic Exploration using Spaceborne and Airborne SAR Sensors: A Close Collaboration Between FGAN, ZESS, and FOMAAS. - Joachim H. G. Ender; Jens Klare; Ingo Walterscheid; Andreas R. Brenner; Matthias Weiss; C. Kirchner; Helmut Wilden; Otmar Loffeld; Andreas Kolb 001; Wolfgang Wiechert; Marc Kalkuhl; Stefan Knedlik; et al. (IGARSS, 2006)

Bistatic Space Borne / Airborne Experiment: Geometrical Modeling and Simulation. - Ulrich Gebhardt; Otmar Loffeld; Holger Nies; Koba Natroshvili; Stefan Knedlik (IGARSS, 2006)

On Position and Attitude Determination Requirements for future Bistatic SAR Experiments. - Stefan Knedlik; Otmar Loffeld; Ulrich Gebhardt (IGARSS, 2006)

A Linear Kalman Filter Approach for Estimation of a Vehicle's Motion Parameters using Range-Doppler Tracking and Road Information. - Ulrich Gebhardt; Patrick Berens; Jürgen Holzner (IGARSS (5), 2009)