A Modified Imaging Interval Selection Method Based on Joint Time-Frequency Analysis for Ship ISAR Imaging
Conference: EUSAR 2018 - 12th European Conference on Synthetic Aperture Radar
06/04/2018 - 06/07/2018 at Aachen, Germany
Proceedings: EUSAR 2018
Pages: 6Language: englishTyp: PDF
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Authors:
Li, Gen; Zhang, Tianyi; Li, Yong; Ding, Zegang; Ke, Meng (Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, Radar Research Lab., School of Information and Electronics, Beijing Institute of Technology, P.R. China)
Abstract:
Selecting proper imaging intervals where the ship rotation vector is constant is a very simple method to obtain high-quality ship inverse synthetic aperture radar (ISAR) images. However, existing imaging interval selection methods are usually based on traversal or iteration, which means that they are time-consuming and complex. Thus, to realize imaging interval selection simply and effectively, a modified imaging interval selection method based on joint time-frequency analysis (JTFA) is proposed in paper. Compared with the traditional range-Doppler algorithm (RDA), the proposed method just has one added step of JTFA. Real data processing results validate the effectiveness and superiority of the proposed method.