激光反射断层成像目标的重构建模仿真  

Modeling and Simulation of Target Reconstruction byLaser Reflection Tomography

作　　者：杨彪 胡以华 李敏乐 郭力仁 唐进迎 陈曦 Yang Biao;Hu Yihua;Li Minle;Guo Liren;Tang Jinying;Chen Xi(1 State Key Laboratory of Pulsed Power Laser Technology,National University of Defense Technology,Hefei,Anhui 230037,China;Anhui Province Key Laboratory of Electronic Restriction,National University of Defense Technology,Hefei,Anhui 230037,China)

机构地区：[1]国防科技大学脉冲功率激光技术国家重点实验室,安徽合肥230037 [2]国防科技大学电子制约技术安徽省重点实验室,安徽合肥230037

出　　处：《光学学报》2018年第11期353-360,共8页Acta Optica Sinica

基　　金：国家自然科学基金(61271353)

摘　　要：提出了一种基于激光束边界面的快速求交算法。基于激光雷达信号的时空分布特性,推算出了探测目标对信号的响应函数,建立了二者的作用过程模型,构建了基于激光反射断层成像的目标重构仿真系统。利用采样间隔和探测角度对重构图像质量的影响,进行了两组对比仿真实验,在不同条件下运用滤波反投影算法实现了目标二维轮廓的图像重构。A fast algorithm based on the boundary of laser beam is proposed. Based on the time-space distribution of laser radar signals, the response function of the detection target to the signal and the model of the interaction process between them are deduced and established. A target reconstruction simulation system based on the laser reflection tomography is constructed. Based on the influences of the different sampling intervals and the different detection angles on the reconstructed image quality, two sets of comparative simulation experiments are carried out. Under different conditions, the filter backprojection algorithm is used to achieve the image reconstruction of the two- dimensional contour for the target.

关 键 词：遥感 激光雷达 反射断层成像 建模仿真 光线求交 响应方程 反投影重构 

分 类 号：O439[机械工程—光学工程]