Near-field wideband 2D and 3D radar imaging using an extended chirp scaling algorithm

Juan M. Lopez-Sanchez; Encarnacion Gimeno Nieves; Marc Bara

doi:10.1117/12.453969

28 January 2002 Near-field wideband 2D and 3D radar imaging using an extended chirp scaling algorithm

Juan M. Lopez-Sanchez, Encarnacion Gimeno Nieves, Marc Bara

Proceedings Volume 4543, SAR Image Analysis, Modeling, and Techniques IV; (2002) https://doi.org/10.1117/12.453969
Event: International Symposium on Remote Sensing, 2001, Toulouse, France

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.

Citation Download Citation

Juan M. Lopez-Sanchez, Encarnacion Gimeno Nieves, and Marc Bara "Near-field wideband 2D and 3D radar imaging using an extended chirp scaling algorithm", Proc. SPIE 4543, SAR Image Analysis, Modeling, and Techniques IV, (28 January 2002); https://doi.org/10.1117/12.453969

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