太赫兹科学与电子信息学报, 2017, 15 (6): 972, 网络出版: 2018-01-25
一种结合空间信息的星载SAR图像舰船目标检测算法
A ship detection method from spaceborne SAR imagery combined with spatial information
合成孔径雷达 舰船检测 空间信息 恒虚警率 Synthetic Aperture Radar ship detection spatial information Constant False Alarm Rate
摘要
针对常规恒虚警率(CFAR)方法对低信杂比合成孔径雷达(SAR)图像舰船目标检测效果不佳的问题, 提出一种结合空间信息的星载SAR图像舰船目标检测方法。该方法通过将像素的空间信息与灰度信息相结合构造联合图像, 以提高目标与背景的对比度, 然后对联合图像进行CFAR检测。基于不同分辨力实测星载SAR图像舰船目标检测的实验结果表明, 与直接基于CFAR的方法相比, 该方法对低信杂比SAR图像具有更好的检测性能。
Abstract
A ship detection method from spaceborne Synthetic Aperture Radar(SAR) imagery combined with spatial information is proposed. It combines the spatial and gray information to construct a combined image to enhance the contrast, followed by a Constant False Alarm Rate(CFAR) detection. Experimental results based on various real data demonstrate that compared to the conventional CFAR, the proposed method performs well in low SCR images in different resolutions.
樊庆聚, 蔡正谊, 冷祥光, 武院生, 计科峰. 一种结合空间信息的星载SAR图像舰船目标检测算法[J]. 太赫兹科学与电子信息学报, 2017, 15(6): 972. FAN Qingju, CAI Zhengyi, LENG Xiangguang, WU Yuansheng, JI Kefeng. A ship detection method from spaceborne SAR imagery combined with spatial information[J]. Journal of terahertz science and electronic information technology, 2017, 15(6): 972.