西安电子科技大学学报（自然科学版）2017，Vol.44Issue(3)：1-7,7.DOI:10.3969/j.issn.1001-2400.2017.03.001
一种三维地面场景SAR回波仿真的快速实现方法
Fast method for SAR echo simulation of a three-dimensional ground scene
摘要
Abstract
Due to huge calculation of SAR echo simulation of a three-dimensional (3D) ground scene,a fast simulation method is proposed.First,the data of a 3D ground scene are fractionally interpolated based on the Fractional Brownian Motion (FBM) model.Second,the data interpolated are divided into lots of small facets whose precision meets the simulation requirement,the backscattering coefficients of the small facets are calculated.Third,the shaded area is judged by the comparison method of overlook angles.Three parallel levels are analyzed and the kernel function is designed.Finally,the computing method of reduction adding and external thread are also utilized under the framework of GPU in order to get high efficiency.With the methods mentioned above,the imaging result of experimental DEM data verifies the validity and superiority of the proposed method.关键词
三维地面/合成孔径雷达/分形布朗运动模型/阴影遮挡/图形处理单元Key words
three-dimensional ground/synthetic aperture radar/fractional brownian motion model/judge shaded area/graphics processing unit分类
信息技术与安全科学引用本文复制引用
景国彬,张云骥,孙光才,邢孟道,保铮..一种三维地面场景SAR回波仿真的快速实现方法[J].西安电子科技大学学报（自然科学版）,2017,44(3):1-7,7.基金项目
国家高技术研究与发展计划(863计划)资助项目(2013AA122202) （863计划）
国家自然科学基金资助项目(61222108) （61222108）
