西安电子科技大学学报（自然科学版）2017，Vol.44Issue(2)：8-13,6.DOI:10.3969/j.issn.1001-2400.2017.02.002
一种抑制SAR图像中动目标干扰的方法
Method to suppress moving targets in SAR images
摘要
Abstract
In the high-resolution wide-swath (HRWS) SAR system, the moving targets are usually smeared and imaged at incorrect positions in the resulting SAR image by utilizing the traditional stationary scene imaging processing.Moreover, these defocused moving targets may cover the stationary scene.The number of spatial degrees of freedom required for suppressing moving targets by the traditional space-time adaptive processing framework is equal to the number of the moving targets in the SAR scene multiplied by the PRF undersampling number.This requirement is hard to meet in practice.In order to overcome the above problem, a new space-time adaptive processing framework based on azimuth Deramp processing is proposed in this paper.Firstly, the moving targets are coarsely focused in the space-time plane through the azimuth Deramp processing.In this case, only one spatial degree of freedom is needed for suppressing one moving target.If there are multiple targets, it can effectively reduce the required degrees of freedom by utilizing the dynamic steering vector concept.Last, simulation results are provided to show the validity of the proposed method.关键词
高分辨率宽测绘带/合成孔径雷达/Deramp/空时自适应处理方法/动态导向矢量Key words
high-resolution and wide-swath/synthetic aperture radar/Deramp/space-time adaptive processing framework/dynamic steering vector分类
信息技术与安全科学引用本文复制引用
肖力,李学仕,孙光才,邢孟道..一种抑制SAR图像中动目标干扰的方法[J].西安电子科技大学学报（自然科学版）,2017,44(2):8-13,6.基金项目
国家自然科学基金资助项目(61301292) （61301292）
空间测控通信创新探索基金资助项目(201509A) （201509A）
