A Numerical Solution for Azimuth Invariant Bistatic SAR Processing Using Geometry-based Bistatic Formula

Conference: EUSAR 2008 - 7th European Conference on Synthetic Aperture Radar
06/02/2008 - 06/05/2008 at Friedrichshafen, Germany

Proceedings: EUSAR 2008

Pages: 4Language: englishTyp: PDF

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Ding, Jinshan; Loffeld, Otmar (Center for Sensorsystems (ZESS), University of Siegen, Germany)
Zhang, Zhenhua; Bao, Zheng (National Key Lab for Radar Signal Processing, Xidian University, China)

An azimuth invariant bistatic SAR focusing approach is presented in this paper. The focusing approach is based on the 2-dimensional point target reference spectrum derived from the principle of stationary phase as well as the bistatic geometry, termed as Geometry-based Bistatic Formula (GBF). This formulation is inherently accurate except for the stationary phase approximation. A numerical solution for a wavenumber domain focusing algorithm was developed. Focusing examples are given to illustrate the validity of this approach.