Autofocusing of inverse synthetic aperture radar images using contrast optimization

A number of autofocusing techniques are proposed for motion compensation in inverse synthetic aperture radar (ISAR) imaging of objects. These techniques are based on the optimization of a contrast function, which represents a measure of the degree of focus of the image. Three novel image contrast fu...

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Bibliographic Details
Published in:IEEE transactions on aerospace and electronic systems 1996-07, Vol.32 (3), p.1185-1191
Main Authors: Berizzi, F., Corsini, G.
Format: Article
Language:English
Subjects:
Aircraft
Applied sciences
Cyclic redundancy check
Exact sciences and technology
Focusing
Image resolution
Inverse synthetic aperture radar
Motion compensation
Radar imaging
Radiolocalization and radionavigation
Signal detection
Signal resolution
Synthetic aperture radar
Telecommunications
Telecommunications and information theory
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Summary:A number of autofocusing techniques are proposed for motion compensation in inverse synthetic aperture radar (ISAR) imaging of objects. These techniques are based on the optimization of a contrast function, which represents a measure of the degree of focus of the image. Three novel image contrast functions are defined and the main steps of the autofocusing algorithm are described. A comparison of the behavior of the proposed techniques is performed analyzing some results obtained from simulation of realistic targets.
ISSN:0018-9251
1557-9603
DOI:10.1109/7.532282