电波科学学报2023，Vol.38Issue(6)：950-959,10.DOI:10.12265/j.cjors.2023151
基于高阶边界散射变换的二面角快速成像算法
Fast imaging algorithm of dihedral based on high-order boundary scattering transform
摘要
Abstract
In this paper,based on the monostatic cylindrical scanning model of the dihedral,we analyze the distribution pattern of odd reflection echoes from dihedrals with different opening angles.By establishing a forward scattering model and determining the exit points that contribute the most to the scattering field at each observation angle,we demonstrate that among various scattering mechanisms within the dihedral angle,specular reflection plays a dominant role.Accordingly,this study focuses solely on the contribution of specular reflection to the scattering field and establishes a one-to-one correspondence between the exit points with stationary phase and the wavefront of the echoes.A high-order boundary scattering transform(HBST)algorithm is proposed to effectively eliminate imaging artifacts caused by multiple reflections.Compared to traditional back-projection algorithms,the HBST algorithm shows significant improvements in computational efficiency and imaging effectiveness.Simulation and experimental results validate the effectiveness of the algorithm.关键词
二面角/边界散射变换(BST)/多次反射/驻定相位点/快速成像Key words
dihedral/boundary scattering transform/multiple reflections/stationary phase point/fast imaging分类
信息技术与安全科学引用本文复制引用
杨俊慧,诸葛晓栋..基于高阶边界散射变换的二面角快速成像算法[J].电波科学学报,2023,38(6):950-959,10.基金项目
国家自然科学基金(62171011) （62171011）
北京市自然科学基金(4232006) （4232006）
