Dealing With Target Nulling and Clutter Inhomogeneities in STAP

Konferenz: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
23.04.2012 - 26.04.2012 in Nuremberg, Germany

Tagungsband: EUSAR 2012

Seiten: 4Sprache: EnglischTyp: PDF

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Bürger, Wolfram (Fraunhofer Institute for High Frequency Physics and Radar Techniques FHR, Neuenahrer Str. 20, 53343 Wachtberg, Germany)

Ground Moving Target Indication (GMTI) is a key feature of modern airborne radar systems. For multichannel phased array radar systems, the GMTI performance can be improved by employing Space-Time Adaptive Processing (STAP) for clutter suppression. If targets are present in the secondary data used for estimating the adaptive weights, STAP performance will be degraded, as the homogeneity assumption on the clutter is violated, and even target nulling may occur. This paper presents and analyzes techniques for dealing with target nulling and clutter inhomogeneities in STAP.