Application of ship wakes detection trace of Synthetic Aperture Radar (SAR) image in the rights protection of coast guard
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Ying Zhang, Ruijia Zhou, Jiawei Sun, Xiao Yu, Liting Zhang
The current situation of rights protection of the coast guard in China is lack of the monitoring capacity especially in a wide range using the ship-borne equipment. Compared with shore-based, ship-borne, airborne detection devices, visible light and infrared remote sensing, SAR has the advantages of coverage widely, stable platform, long-term continuous observation and high input-output ratio. The common methods of ship information extraction based on SAR images include direct detection of ship targets, detection of ship wake characteristics and detection of oil film on sea surface caused by engine or fish oil leakage. Several algorithms have been developed for ship wake detection, including two-parameter constant false alarm rate (CFAR) algorithm, K-distribution based CFAR algorithm, multi-polarization detection algorithm and multi-image correlation method. In this paper, combining the needs of marine rights enforcement and analyzing the characteristics of different algorithms and, the ship wake information extraction technology of SAR image is applied to the marine integrated management and control network to improve the recognition rate of ship target monitoring, expand the monitoring scope, shorten the analysis and recognition time, and effectively enhance the law enforcement capability of marine rights protection in China. Strength, safeguard China's marine rights and interests.
Ship wakes detection trace, Synthetic Aperture Radar, Rights protection of Coast guard