A Method for Discrimination of Ship Target and Azimuth Ambiguity in Multi-polarimetric SAR Imagery
Zhou Wei① Sun Yan-li② Xu Cheng-bin① Guan Jian①
①(Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China) ②(Department of Basic Experiment, Naval Aeronautical and Astronautical University, Yantai 264001, China)
Aiming to remove the false alarm caused by azimuth ambiguity in SAR imagery during the process of ship target detection, a method based on the improved H/α/Wishart unsupervised classification is proposed. First, the scattering echo peak zone of target is extracted and the H/α classification results are treated as the initial cluster centers. Second, the ship target and azimuth ambiguity are identified by comparing and analyzing the structure of each region. It is showed by experiment that the method can detect ships based on the azimuth ambiguity; thus the false alarm rate in SAR-based ship detection is reduced.
周 伟,孙艳丽,许成斌,关 键. 一种多极化SAR舰船目标与方位向模糊鉴别方法[J]. 雷达学报, 2015, 4(1): 84-92.
Zhou Wei,Sun Yan-li,Xu Cheng-bin,Guan Jian. A Method for Discrimination of Ship Target and Azimuth Ambiguity in Multi-polarimetric SAR Imagery. JOURNAL OF RADARS, 2015, 4(1): 84-92.
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