professional societies.

[Otmar Loffeld]{} (M’05–SM’06) received the Diploma degree in electrical engineering from the Technical University of Aachen in 1982, the Dr. Eng. degree and the “Habilitation” in the field of digital signal processing and estimation theory in 1986 and 1989, respectively, both from the University of Siegen. In 1991, he became professor for digital signal processing and estimation theory at the University of Siegen. He lectures on General Communication Theory, Digital Signal Processing, Stochastic Models and Estimation Theory and Synthetic Aperture Radar, and is author of two textbooks on estimation theory. In 1995, he joined the Center for Sensorsystems (ZESS) at the University of Siegen and became the chair in 2005.

In 1999, Prof. Dr. Loffeld became Principal Investigator (PI) on Baseline Estimation for the X-Band part of theShuttle Radar Topography Mission (SRTM), to which ZESS contributed to DLR’s baseline calibration algorithms. He is a PI for interferometric techniques in the German TerraSAR-X mission, anda PI for a bistatic spaceborne airborne experiment, where TerraSAR-X serves as the bistatic illuminator while FGAN’s PAMIR system mounted on a Transall airplane is used as a bistatic receiver.

In 2002, he founded the International Postgraduate Program (IPP) “Multi Sensorics,” and in 2008 established the “NRW Research School on Multi Modal Sensor Systems for Environmental Exploration and Safety (MOSES)” at the University of Siegen.

His current research interests include multisensor-data fusion, Kalman filtering techniques for data fusion, optimal filtering and process identification, SAR processing and simulation, SAR interferometry, phase unwrapping, baseline estimation and, recently, bistatic SAR processing. He is a member of the