有限元-边界法在光电目标散射计算中的应用

陈兆兵; 郭劲; 林森

有限元-边界法在光电目标散射计算中的应用

1.
中国科学院长春光学精密机械与物理研究所,吉林长春 130033;
2.
中国人民解放军装甲兵技术学院,吉林长春 130117

详细信息

作者简介:
陈兆兵(1980—),男,山东五莲人,博士,主要从事光电对抗装备的光机电结构一体化设计方面的研究。 E-mail:chenzhaobing999@163.com

中图分类号: TN97; TP312
计量
- 文章访问数: 4187
- HTML全文浏览量: 442
- PDF下载量: 1438
- 被引次数: 0
出版历程
- 收稿日期: 2010-11-11
- 修回日期: 2011-02-13
- 刊出日期: 2011-04-25

Application of FE-BI to calculation of opto-electronic target scattering

1.
Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
2.
Armor Technique Institute of the People's Liberation Army,Changchun 130117,China

摘要

摘要: 为了解决三维目标电磁散射计算中准确性与有效性的矛盾,建立了有限元-边界法的计算模型,对三维腔体目标的电磁散射计算方法进行了研究。首先,分析了针对三维电磁腔体目标的电磁散射计算边界积分方法,引入了矢量格林函数,利用麦克斯韦方程得到电磁场形式与三维腔体形式的关系,建立了三维开口腔体边界模型;然后,结合光电目标曲面建模方法及高阶基函数的方法,建立了三维光电目标的有限元泛函,完成了有限元-边界法在三维腔体目标电磁散射计算中的应用;最后,进行了实例验证。分析显示,当三维腔体内部为空或为各向异性物质时,角度吻合非常理想,与传统模式匹配法所得结果的吻合度达90%以上。结果表明,采用本方法对三维腔体目标进行电磁散射计算,准确度、效率均有所提高。
- 光电目标 /
- 电磁散射 /
- 有限元 /
- 边界积分
Abstract: In order to solve the contradiction between veracity and validity for calculating the three-dimensional target electromagnetic scattering, a calculator mode about Finite Element-Boundary Integral(FE-BI) was set up to calculate the three-dimensional target electromagnetic scattering. Firstly, the three-dimensional target electromagnetic scattering calculation borderline integral was analyzed, and the vector Green function was introduced. On the basis of the connection between electromagnetism form and three-dimensional cavity form, the three-dimensional hatch cavity borderline mode was set up. Then, the finite element commonly function was established by combining the optical target surface modeling method with the higher order function method, and the application of the FE-BI to calculating three-dimensional target electromagnetic scattering was achieved. Finally, the following example analysis was proved. It is shown that the angle tally is very ideal when the dimensional bosom is empty or anisotropic matter. The consistance has been 90% as compared with the traditional matching method. In conclusion, the veracity and validity of calculation are improved by the proposed method.
- opto-electronic target /
- electromagnetic scattering /
- finite element /
- boundary integral

HTML全文

参考文献(1)

[1] 王长清,祝西里.电磁场计算中的时域有限差分法[M]. 北京:北京大学出版社,1994. WANG CH Q,ZHU X L. The Finite-Difference Time-Domain Method on Electromagnetism Calculation[M]. Beijing:University Press,1994.(in Chinese) [2] 王永刚,孟艳丽,马文生,等. 掠入射X射线散射法测量超光滑表面[J]. 光学精密工程 ,2010,18(1):60-68. WANG Y G,MENG Y L,MA W SH,et al.. Measurement of super-smooth surface by grazing X-ray scattering method[J]. Opt. Precision Eng.,2010,18(1):60-68.(in Chinese) [3] 孟庆华,郭安儒,张勇杰,等. PS/PMMA复合材料的光散射[J]. 光学精密工程 ,2009,17(11):2646-2650. MENG Q H,GUO A R,ZHANG Y J,et al.. Light scattering property of PS/PMMA compounds[J]. Opt. Precision Eng.,2009,17(11):2646-2650.(in Chinese) [4] 李萍,卢振武,夏利东,等. 反射式内掩日冕仪的光学设计与杂散光分析[J]. 中国光学与应用光学 ,2009,2(5):408-413. LI P,LU ZH W,XIA L D,et al.. Stray light analysis of internally occulted mirror coronagraph[J]. Chinese Opt. and Appl. Opt.,2009:2(5):408-413.(in Chinese) [5] 郎治国,谭久斌. 由相关函数拟合极值法提高位相板衍射光斑定位的计算效率[J]. 光学精密工程 ,2009,17(10):2392-2400. LANG ZH G,TAN J B. Improvement of calculation efficiency for locating diffraction spot of phase plate with correlation function fitting extreme method[J]. Opt. Precision Eng.,2009,17(10):2392-2400.(in Chinese) [6] 李大禹,胡立发,穆全全,等. CUDA架构下的液晶自适应波面数值解析[J]. 光学精密工程 ,2010,18(4):848-854. LI D Y,HU L F,MU Q Q,et al.. Wavefront calculation of liquid crystal adaptive optics based on CUDA[J]. Opt. Precision Eng.,2010,18(4):848-854.(in Chinese) [7] 聂小春,葛德彪,袁宁. 边界积分法及连接算法分析任意腔体的散射[J]. 微波学报 ,1999,15(4):334-338. NIE X CH,GE D B,YUAN N. The analyze of dispersion of any cavity using boundary integral and connect arithmetic[J]. J. Microwaves,1999,15(4):334-338.(in Chinese) [8] 史林兴,王莉,李华,等. 表面等离子体激元透镜设计及其数值计算[J]. 光学精密工程 ,2010,18(4):831-835. SHI L X,WANG L,LI H,et al.. Design and numerical simulation of plasmon polariton nanolens[J]. Opt. Precision Eng.,2010,18(4):831-835.(in Chinese) [9] 张磊,何昕,魏仲慧,等. 三角形星图识别算法的改进[J]. 光学精密工程 ,2010,18(2):458-463. ZHANG L,HE X,WEI ZH H,et al.. Modification of triangle identification algorithm[J]. Opt. Precision Eng.,2010,18(2):458-463.(in Chinese) [10] 崔志伟,韩一平. 电大尺寸开口腔体电磁散射的子结构法研究[J]. 电波科学学报, 2009,24(5):914-919. CUI ZH W,HAN Y P. The substructure method for scattering by large open-ended cavities[J]. Chinese J Radio Sci.,2009,24(5):914-919.(in Chinese) [11] 于旭东,张鹏飞,汤建勋,等. 机抖激光陀螺温度场的有限元模拟与实验[J]. 光学精密工程 ,2010,18(4):913-920. YU X D,ZHANG P F,TANG J X,et al.. Finite element analysis and experiments of temperature fields of mechanically dithered ring laser gyroscopes[J]. Opt. Precision Eng.,2010,18(4):913-920.(in Chinese) [12] 岳巾英,刘华,徐文斌,等. 计算全息法测量长焦透镜面形和焦距[J]. 中国光学与应用光学 ,2009,2(6):502-507. YUE J Y,LIU H,XU W B,et al.. Measurement of optical surface and foci of long focal length lens by CGH[J]. Chinese Opt. and Appl. Opt.,2009,2(6):502-507.(in Chinese) [13] 贺俊,陈磊. 使用红外干涉仪测量非球面面形[J]. 光学精密工程 ,2010,18(1):69-74. HE J,CHEN L. Measurement of aspheric surfaces by infrared interferometer[J]. Opt. Precision Eng.,2010,18(1):67-74.(in Chinese) [14] 林旭东,陈涛,明名,等. 球面拼接镜的相对曲率半径测量[J]. 光学精密工程 ,2010,18(1):75-82. LIN X D,CHEN T,MING M,et al.. Measurement of relative curvature radius for spherical segmented mirrors[J]. Opt. Precision Eng.,2010,18(1):75-82.(in Chinese) [15] 赵立荣,柳玉晗,朱玮,等. 光电经纬仪单站空间余弦及多站面面交汇的飞机姿态测量[J]. 光学精密工程 ,2009,17(11):2786-2793. ZHAO L R,LIU Y H,ZHU W,et al.. Measurement of aircraft attitude by spatial cosine relationship in single-station and planes to intersection in multi-station of electro-optical theodolite[J]. Opt. Precision Eng.,2009,17(11):2786-2793.(in Chinese)

施引文献

附加信息(0)

访问统计