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Proceedings Paper

Near-field wideband 2D and 3D radar imaging using an extended chirp scaling algorithm
Author(s): Juan M. Lopez-Sanchez; Encarnacion Gimeno Nieves; Marc Bara
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Paper Abstract

This paper presents a new near-field 3-D synthetic aperture radar (SAR) imaging algorithm. This algorithm is an extension of the 2-D chirp scaling algorithm (CSA). First, the original formulation of the CSA has been extended to the 3-D case. Then, some processing steps have been reformulated in order to incorporate additional terms (up to n-th order) in the approximations assumed by the algorithm. These extra terms are required to maintain the accuracy of the method in the so-called near-field conditions (large coherent integration angle and/or high bandwidth-to-center-frequency ratio), but do not entail a significant increase of the computation time. The algorithm has been also optimized for stepped-frequency radars. The performance of the method has been illustrated with numerical simulations and experiments.

Paper Details

Date Published: 28 January 2002
PDF: 12 pages
Proc. SPIE 4543, SAR Image Analysis, Modeling, and Techniques IV, (28 January 2002); doi: 10.1117/12.453969
Show Author Affiliations
Juan M. Lopez-Sanchez, Univ. de Alicante (Spain)
Encarnacion Gimeno Nieves, Univ. de Alicante (Spain)
Marc Bara, Institut de Geomatica (Spain)


Published in SPIE Proceedings Vol. 4543:
SAR Image Analysis, Modeling, and Techniques IV
Francesco Posa, Editor(s)

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