Improving Ship Detection with Polarimetric SAR based on Convolution between Co-polarization Channels

Sensors

Haiyan Li¹  Yijun He¹ 

[1] Institute of Oceanology, Chinese Academy of Sciences, Qingdao Shandong, 266071, P.R. China

关键词: polarimetric SAR;    co-polarization;    ship detection;    convolution;   

DOI  :  10.3390/s90201221

来源: mdpi

【 摘 要 】

The convolution between co-polarization amplitude only data is studied to improve ship detection performance. The different statistical behaviors of ships and surrounding ocean are characterized a by two-dimensional convolution function (2D-CF) between different polarization channels. The convolution value of the ocean decreases relative to initial data, while that of ships increases. Therefore the contrast of ships to ocean is increased. The opposite variation trend of ocean and ships can distinguish the high intensity ocean clutter from ships' signatures. The new criterion can generally avoid mistaken detection by a constant false alarm rate detector. Our new ship detector is compared with other polarimetric approaches, and the results confirm the robustness of the proposed method.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.