基于折射率界面厚度和本征正交分解的三维非均匀固体媒质光传输算法研究

项目名称： 基于折射率界面厚度和本征正交分解的三维非均匀固体媒质光传输算法研究

项目编号： No.61275020

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 范志刚

作者单位： 哈尔滨工业大学

项目金额： 75万元

中文摘要： 三维非均匀固体媒质光传输效应研究在提高高速飞行器末制导精度方面非常重要；采用数值仿真方法，重点研究内容包括：(1)三维非均匀固体媒质复杂热环境建模；(2)基于折射率界面厚度和本征正交分解的三维非均匀固体媒质折射率场重构；(3)三维非均匀固体媒质光传输数值仿真与算法研究；(4)三维非均匀固体媒质光传输算法置信度研究；(5)三维非均匀固体媒质重构折射率场和原折射率场光传输仿真结果比对研究。预期目标为：有效减少三维非均匀固体媒质光传输研究所需折射率场信息量；揭示复杂热环境对三维非均匀固体媒质成像质量的影响规律；解决不同入射角度下三维非均匀固体媒质光传输问题。该课题的研究成果将为提高高速飞行器末制导精度提供理论基础和指导方法，也可用于提高星地探测光电系统和近空间高速飞行器光电对地成像系统的成像精度。

中文关键词： 三维变折射率固体介质；光传输；折射率场重构；折射率界面厚度；高阶奇异值分解

英文摘要： Study on the optical transmission effect of three-dimensional inhomogeneous solid medium is important for enhancing the terminal guidance precision of high-speed aircraft. Based on numerical simulation, this study includes the following parts: (1)establishing the computational model of the complex thermal environment for three-dimensional inhomogeneous solid medium, (2)reconstructing refractive index field of three-dimensional inhomogeneous solid medium based on refractive interfacial thickness concept and proper orthogonal decomposition, (3)investigating the numerical simulation and algorithm for the optical transmission through three-dimensional inhomogeneous solid medium, (4)analyzing the confidence level of the optical transmission algorithm for three-dimensional inhomogeneous solid medium, and (5)comparing the optical transmission result of the reconstructed refractive index field with that of the original refractive index field for three-dimensional inhomogeneous solid medium. The purposes of this study are (1) to reduce the refractive index information required in the optical transmission research of three-dimensional inhomogeneous solid medium, (2) to disclose the influences exerted by the complex thermal environment on the imaging quality of three-dimensional inhomogeneous solid medium, (3)and to so

英文关键词： hree-dimensional gradient solid medium；optical transmission；refractive index field reconstruction；refractive interfacial thickness；higher-order singular value decomposition