高掠海角下基于Radon变换的海杂波抑制方法
doi: 10.3724/SP.J.1146.2005.01211
Method for Radon Transform Based Sea Clutter Suppression at High Grazing Angles
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摘要: 高掠海角情况下，目标完全淹没在杂波里面，这使得雷达难以对海面目标进行三维成像。该文提出一种基于Radon变换的适用于高掠海角情况下三维成像处理的海杂波抑制方法。利用ISAR技术得到回波二维像，差波束补偿之后，对其进行Radon变换,再利用该文提出的结合边缘检测技术的搜索算法得到的参数，完成目标与海杂波分离处理。三维成像仿真结果表明该方法对克服海杂波影响是有效的。Abstract: At high grazing angles, the sea clutter background has a strong impact on 3-D imaging. A method for Radon transform based sea clutter suppression is given in this paper. ISAR technique is used to get two-dimension image of the target firstly. Then angular motion compensation and Radon transformation are performed to the ISAR image. A novel search algorithm based on the edge detection is used to divide the target from the sea clutter in the end. The result of the 3-D imaging shows the effectiveness of the new method for sea clutter suppression.
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