Feature Enhancement of Stripmap-Mode SAR Images Based on an Optimization Scheme

NCUIR > Research Center > Center for Space and Remote Sensing Research > journal & Dissertation > Item 987654321/27651

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/27651

Title:	Feature Enhancement of Stripmap-Mode SAR Images Based on an Optimization Scheme
Authors:	Chiang,CY;Chen,KS;Wang,CT;Chou,NS
Contributors:	太空及遙測研究中心
Date:	2009
Issue Date:	2010-06-29 18:51:27 (UTC+8)
Publisher:	中央大學
Abstract:	Based on a nonquadratic-optimization method originally proposed for spotlight-mode SAR image reconstruction, a modification for stripmap-mode SAR images is presented in this letter. This is done by mathematically reformulating the projection kernel and numerically putting it into a form that is suitable for optimization. The performance was evaluated by measures of the target contrast and 3-dB beamwidth using Radarsat-1 data. Results were analyzed and compared with those using minimum-variance and multiple-signal-classification methods. Results demonstrate that the target's features are effectively enhanced and that the dominant scattering centers are well separated using the proposed method. In addition, the image fuzziness is greatly reduced, and the image fidelity is well preserved. The effectiveness of the modification is thus validated.
Relation:	IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
Appears in Collections:	[Center for Space and Remote Sensing Research ] journal & Dissertation

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