飞机表面绕射射线的寻迹方法

王冰切; 苏东林; 张晓雷

飞机表面绕射射线的寻迹方法

北京航空航天大学电子信息工程学院,北京 100083

详细信息

作者简介:
王冰切(1972-),男,河南息县人,博士生,wbq@ee.buaa.edu.cn.

中图分类号: TN 99; V 2
计量
- 文章访问数: 2885
- HTML全文浏览量: 99
- PDF下载量: 1161
- 被引次数: 0
出版历程
- 收稿日期: 2006-07-03
- 网络出版日期: 2007-07-31

Discrete ray path tracing on aircraft

School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 研究一种电子对抗特种飞机表面绕射射线的寻迹新方法.对飞机进行快速三维几何建模和表面网格剖分,并根据需要对几何模型的剖面和结点加密,生成飞机表面网格数据;选定寻迹区域,对飞机表面网格结点进行管理,根据费马原理,采用改进的动态规划方法,在飞机表面网格上快速、准确地实现任意源点和绕射接收点间的短程线计算;在此基础上,采用递归方法实现可视化的几何绕射理论(GTD)、一致性几何绕射理论(UTD)绕射射线离散寻迹.绕射射线离散寻迹为数值方法求解机身表面任意两点间的天线隔离度提供了条件.
- 射线寻迹 /
- 动态规划 /
- 递归方法 /
- 短程线
Abstract: A novel diffraction ray tracing method on convex surfaces of electronic warfare special aircraft was investigated. Quickly-3D-model of aircraft was carried out, and surface grids were meshed on the model to provide surface discrete grids data. Enough points can be achieved by minutely modeling or interpolating splines and nodes. Base on tracing area was selected and grid nodes were managed, according to Fermat principle, the length of geodesic path between the source and incept point can be calculated quickly and veraciously with the method of improved dynamic programming on the platform surface discrete grids served as. Then, discrete geometrical theory of diffraction(GTD) and uniform geometrical theory of diffraction(UTD) ray tracing on aircraft was realized with the method of recursive method. This work provided an approach for quickly analyzing antenna isolation with numerical method.
- ray path tracing /
- dynamic programming /
- recursive programming /
- geodesic path

HTML全文

参考文献(1)

[1] Bogdanor J L. Intrasystem electromagnetic compatibility analysis program . AD-A008526, 1974 [2] Kim J J, Burnside W D. Simulation and analysis of airborne antenna radiation pattern . NASA-CR-1984-181250, 1984 [3] 吴萍, 吴先良. 凸曲面爬行波射线寻迹的研究[J]. 微机发展, 2003, 13(9):60-62 Wu Ping, Wu Xianling. Ray path tracing on convex surface with applications to creeping wave[J]. Microcomputer Development, 2003, 13(9):60-62(in Chinese) [4] 李伟明, 吕晓德, 高本庆, 等. GTD应用中任意凸曲面表面爬行波射线寻迹[J]. 电子学报, 2000, 28(3):49-51 Li Weiming, Lü Xiaode, Gao Benqing, et al. Ray path tracing on convex surface with applications to the geometrical theory of diffraction[J]. Acta Electroncia Sinica, 2000, 28(9):49-51(in Chinese) [5] 方逵, 傅凯新. 保形插值的样条函数方法[J]. 国防科技大学学报, 1994, 16(12):88-93 Fang Kui, Fu Kaixin. Spline function method for shape preserving interpolation[J]. Journal of National University Defense Technology, 1994, 16(12):88-93(in Chinese) [6] 宁焕生, 杨志凌,王宝发. C2R样条用于低散射目标爬行波求解[J]. 北京航空航天大学学报, 2000, 26(12):137-140 Ning Huansheng, Yang Zhiling, Wang Baofa. C-R spline fitting theory for the RCS computation of low-scattering targets[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(12):137-140(in Chinese) [7] 吁日新, 朱自强. B样条应用于超限插值的网格生成方法[J]. 北京航空航天大学学报, 2003, 29(11):27-30 Yu Rixin, Zhu Ziqiang. Transfinite interpolation grid generation with the application of B spline[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(11):27-30(in Chinese) [8] 赵军, 曲仕茹, 程耀东. 一种用于飞机识别的三维建模方法[J]. 工程图学学报, 2005, 26 (5):51-55 Zhao Jun, Qu Shiru, Cheng Yaodong. An approach of 3-dimendional modeling for aircraft recognition[J]. Journal of Engineering Graphics, 2005, 26 (5):51-55(in Chinese)

施引文献

资源附件(0)

访问统计