【摘要】：研究復(fù)雜目標(biāo)的幾何建模、光學(xué)面元消隱和目標(biāo)表面的光學(xué)散射特性.針對任意構(gòu)型的目標(biāo),提出采用均勻光照明仿真圖像進行光學(xué)散射截面(OCS)數(shù)值計算方法.通過自適應(yīng)Z緩存方法,實現(xiàn)目標(biāo)光學(xué)消隱面的計算,將這部分消隱面面積從目標(biāo)OCS的數(shù)值積分中去除.研究近似鏡面材料的空間模板褶皺表面的光學(xué)散射數(shù)值模擬方法,以及基于激光主動探測系統(tǒng)實驗測量數(shù)據(jù)的目標(biāo)OCS實驗分析方法.根據(jù)某縮比例空間目標(biāo)相對探測系統(tǒng)不同方位、俯仰角情況的OCS實驗結(jié)果,校正OCS數(shù)值仿真參數(shù).仿真結(jié)果與實驗結(jié)果的圖像比較和OCS曲線趨勢大略一致,考慮到表面褶皺的隨機性、姿態(tài)的測量誤差和仿真模型有限的校準(zhǔn)能力等因素,本文提出的數(shù)值仿真方法能夠在一定程度上描述目標(biāo)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.
【作者單位】： 北京應(yīng)用物理與計算數(shù)學(xué)研究所;中國工程物理研究院高能激光科學(xué)與技術(shù)重點實驗室;
【基金】：Supported by the Key Laboratory of Beam Control Foundation of Chinese Academy of Sciences(2014LBC003)
【分類號】：O436.2

【相似文獻】

相關(guān)期刊論文 前10條

1 郝偉,余祖譽,李玉柏;原子喇曼散射截面的理論計算[J];原子與分子物理學(xué)報;1986年04期

2 郭曉杰;金屬導(dǎo)體的低頻散射場及散射截面[J];科學(xué)通報;1989年13期

3 胡永茂;張桂檣;李汝恒;陳麗;張學(xué)清;;氙原子散射截面反�，F(xiàn)象的觀測分析[J];物理實驗;2008年07期

4 金石琦,徐至展;電子與氖原子在10—100eV能量范圍內(nèi)的散射截面[J];物理學(xué)報;1998年04期

5 高云,劉繼才;高能量下的硬球散射截面[J];濟南大學(xué)學(xué)報;2000年05期

6 勾亮,東方曉,周咸建;高能γγ→γγ散射截面數(shù)值計算[J];高能物理與核物理;2001年03期

7 何淦明;李清潤;;中能p-~(12)C散射截面和自旋量的研究[J];高能物理與核物理;1991年07期

8 陳剛,方楨云,胡炳全;標(biāo)準(zhǔn)模型下γγ→t，

本文編號：2524700