SAR航天遥感图象中的舰船航迹影象包含有舰船的行进速度、行进方向、船体长度等重要信息,而充分开发利用与运动舰船航迹相关的信息资源,能够加强对海上舰船航行的监测能力.通过对舰船航迹在卫星遥感SAR图象中不同模式及Radon变换原理和特性的分析,提出了应用Radon变换对SAR图象中的窄V形舰船航迹进行了检测的方法,通过实例测试,效果比较理想.

We can get much useful information by remote sensing sensor. Wake disturbances contain information about the generating vessels speed, course, length. Space-based sensor system could provide naval force with an enhanced capability for surveillance of ship traffic in open ocean areas if the information content of signatures associated with the hydrodynamic wake of a moving ship can be exploited. In this paper, the detection of wakes obtained form satellite images using synthetic aperture radar techniques is discussed. First we analyze the patterns of ship wake in SAR images. Then it is concluded that the problem can be considered a detecting line problem, and we describe the theory and the characteristics of Radon Transform briefly. Finally, we apply Radon Transform to detect narrow-V ship wake from some ERS-1 SAR images. The results show that the algorithm is effective.