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Optimal ship imaging for shore-based ISAR using DCF estimation
Pages: 739-745
Year: Issue:  4
Journal: Journal of Systems Engineering and Electronics

Keyword:  inverse synthetic aperture radar (ISAR)ship targetoptimal imaging time selectionDoppler centroid frequency (DCF);
Abstract: The optimal imaging time selection of ship targets for shore-based inverse synthetic aperture radar (ISAR) in high sea conditions is investigated. The optimal imaging time includes opti-mal imaging instants and optimal imaging duration. A novel method for optimal imaging instants selection based on the estimation of the Doppler centroid frequencies (DCFs) of a series of images obtained over continuous short durations is proposed. Combined with the optimal imaging duration selection scheme using the image contrast maximization criteria, this method can provide the ship images with the highest focus. Simulated and real data pro-cessing results verify the effectiveness of the proposed imaging method.
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