Abstract:

A tutorial on adaptive array processing is given. First the principles of adaptive beamforming are presented and the problems of estimating the adaptive weights. Several associated practical problems, like preserving low sidelobes, reducing degrees of freedom using subarrays and GSLC configurations and non-stationary interference are then addressed. We explain the relation to the detection problem with adaptive arrays and the methods for angle estimation. Finally the methods for resolution enhancement (super-resolution methods), relationships and problems and real data results are presented.

Bio:
Ulrich Nickel received the Diploma in Mathematics (Master degree equivalent) from the University of Cologne (Germany) in 1975 and the Dr. rer.nat. degree from the Technical University of Aachen (Germany) in 1983.

Since 1975 he was at the Array-Based Radar Imaging Department of the Research Institute for High Frequency Physics and Radar Techniques (FHR) of FGAN (German Defence Research Establishment) in Wachtberg, Germany. He was visiting scientist at the Defence R&D Canada, Ottawa, in 1987. Since 2007 he is with the Sensor Networks and Data Fusion Department (SDF) of the Research Institute for Communication, Information Processing and Ergonomics (FKIE) of FGAN. His interests include all aspects of array signal processing, especially radar detection and parameter estimation with adaptive interference suppression and superresolution methods.

He received the VDE/ ITG paper prize 1989 and paper prize at CIE Radar 2006 (Shanghai). He is contributing author of the books ’Radar Array Processing’ (eds. S. Haykin et al, Springer-Verlag, 1993) and ’Applications of Space-Time Adaptive Processing’ (ed. R. Klemm, IEE Publishers, 2004). He is member of the editorial board of the Int. Journal of Electronics and Communications (AEÜ), and member of VDE/ITG.