摘要
在方位多通道合成孔径雷达(SAR)体制下,针对近岸水面区域出现的强模糊地杂波抑制问题,该文分析推导了模糊杂波的多通道导向矢量,建立了近岸水面区域的SAR图像域多通道信号模型。以推导的导向矢量和建立的模型为依据,提出了适合近岸水面区域的模糊杂波抑制方法,分析了方位多通道空域采样带来的空域模糊对模糊杂波的影响,在此基础上,对该类背景下的动目标检测性能进行了仿真分析。仿真实验验证了该算法的有效性。
To deal with the clutter suppression issue in the moving target detection for the near-shore water regions with azimuth multichannel SAR systems, the multichannel steering vector of the ambiguous clutter is derived, and the multichannel signal model of the near-shore water regions in image domain is established. Based on the derived steering vector and the established signal model, ambiguous clutter suppression methods suitable for the near-shore water regions are proposed. The impact of the spatial ambiguity which is induced by the sampling with multiple channels, on the ambiguous clutter is analyzed. Then, the simulation analysis of the Ground Moving Target Indication (GMTI) performance for the near-shore water region is given. The validities of the proposed methods are verified by the simulation results.
出处
《电子与信息学报》
EI
CSCD
北大核心
2014年第5期1030-1035,共6页
Journal of Electronics & Information Technology
基金
长江学者和创新团队发展计划(IRT-0954)
国家自然科学基金(61231017
60901066)
中央高校基本科研业务费专项资金(K5051302007)资助课题
关键词
合成孔径雷达
地面运动目标检测
杂波抑制
方位模糊
SAR
Ground Moving Target Indication (GMTI)
Clutter suppression
Azimuth ambiguity