期刊
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
卷 12, 期 8, 页码 1780-1784出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LGRS.2015.2425873
关键词
Polarimetric synthetic aperture radar (PolSAR); scattering mechanism (SM); ship detection; signal-to-clutter ratio (SCR); superpixel
类别
资金
- National Natural Science Foundation of China [61201292, 61322103, 61372132]
To improve the target detection performance under a low signal-to-clutter ratio, this letter presents a new polarimetric synthetic aperture radar (PolSAR) ship detector based on superpixel-level scattering mechanism (SM) distribution features. The proposed method is based on the observation that the SMs of targets and clutter have different distributions in the classical H/alpha plane. To make use of this difference in ship detection, multiscale superpixels are first generated for PolSAR images. Then, two features describing the SM distribution in the superpixel are proposed. Based on these features, a test statistic independent of the scattering intensity is finally defined. The performance improvement of the proposed method is verified using a synthetic data set and real PolSAR images obtained from a RADARSAT-2 data set.
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