复杂目标光学散射截面数值仿真方法（英文）
发布时间：2019-08-09 09:05
【摘要】：研究复杂目标的几何建模、光学面元消隐和目标表面的光学散射特性.针对任意构型的目标,提出采用均匀光照明仿真图像进行光学散射截面(OCS)数值计算方法.通过自适应Z缓存方法,实现目标光学消隐面的计算,将这部分消隐面面积从目标OCS的数值积分中去除.研究近似镜面材料的空间模板褶皱表面的光学散射数值模拟方法,以及基于激光主动探测系统实验测量数据的目标OCS实验分析方法.根据某缩比例空间目标相对探测系统不同方位、俯仰角情况的OCS实验结果,校正OCS数值仿真参数.仿真结果与实验结果的图像比较和OCS曲线趋势大略一致,考虑到表面褶皱的随机性、姿态的测量误差和仿真模型有限的校准能力等因素,本文提出的数值仿真方法能够在一定程度上描述目标的OCS值.
[Abstract]:The geometric modeling of complex targets, the blanking of optical surface elements and the optical scattering characteristics of target surface are studied. For arbitrary configuration targets, a (OCS) numerical method for optical scattering cross section is proposed by using uniform light lighting simulation image. Through the adaptive Z cache method, the calculation of the optical hidden surface of the target is realized, and the area of the hidden surface is removed from the numerical integration of the target OCS. The numerical simulation method of optical scattering on the fold surface of space template approximate mirror material and the OCS experimental analysis method of target based on the experimental measurement data of laser active detection system are studied. According to the OCS experimental results of different azimuth and pitch angle of a reduced space target relative to the detection system, the OCS numerical simulation parameters are corrected. Compared with the experimental results, the simulation results are in good agreement with the trend of OCS curve. considering the randomness of surface folds, the measurement error of attitude and the limited calibration ability of the simulation model, the numerical simulation method proposed in this paper can describe the OCS value of the target to a certain extent.
【作者单位】： 北京应用物理与计算数学研究所;中国工程物理研究院高能激光科学与技术重点实验室;
【基金】：Supported by the Key Laboratory of Beam Control Foundation of Chinese Academy of Sciences(2014LBC003)
【分类号】：O436.2
[Abstract]:The geometric modeling of complex targets, the blanking of optical surface elements and the optical scattering characteristics of target surface are studied. For arbitrary configuration targets, a (OCS) numerical method for optical scattering cross section is proposed by using uniform light lighting simulation image. Through the adaptive Z cache method, the calculation of the optical hidden surface of the target is realized, and the area of the hidden surface is removed from the numerical integration of the target OCS. The numerical simulation method of optical scattering on the fold surface of space template approximate mirror material and the OCS experimental analysis method of target based on the experimental measurement data of laser active detection system are studied. According to the OCS experimental results of different azimuth and pitch angle of a reduced space target relative to the detection system, the OCS numerical simulation parameters are corrected. Compared with the experimental results, the simulation results are in good agreement with the trend of OCS curve. considering the randomness of surface folds, the measurement error of attitude and the limited calibration ability of the simulation model, the numerical simulation method proposed in this paper can describe the OCS value of the target to a certain extent.
【作者单位】： 北京应用物理与计算数学研究所;中国工程物理研究院高能激光科学与技术重点实验室;
【基金】：Supported by the Key Laboratory of Beam Control Foundation of Chinese Academy of Sciences(2014LBC003)
【分类号】：O436.2
【相似文献】
相关期刊论文 前10条
1 郝伟,余祖誉,李玉柏;原子喇曼散射截面的理论计算[J];原子与分子物理学报;1986年04期
2 郭晓杰;金属导体的低频散射场及散射截面[J];科学通报;1989年13期
3 胡永茂;张桂樯;李汝恒;陈丽;张学清;;氙原子散射截面反常现象的观测分析[J];物理实验;2008年07期
4 金石琦,徐至展;电子与氖原子在10—100eV能量范围内的散射截面[J];物理学报;1998年04期
5 高云,刘继才;高能量下的硬球散射截面[J];济南大学学报;2000年05期
6 勾亮,东方晓,周咸建;高能γγ→γγ散射截面数值计算[J];高能物理与核物理;2001年03期
7 何淦明;李清润;;中能p-~(12)C散射截面和自旋量的研究[J];高能物理与核物理;1991年07期
8 陈刚,方桢云,胡炳全;标准模型下γγ→t，
本文编号：2524700
本文链接：https://www.wllwen.com/kejilunwen/wulilw/2524700.html
