摘要：目标的红外特性仿真是红外视景仿真系统的重要组成部分。本文主要是对一种基于有限元的目标红外特性通用仿真方法进行研究。对地面目标的红外特性进行理论分析；运用计算机辅助设计软件solidworks对目标进行三维实体建模；将建好的模型导入ANSYS，对建立的三维实体模型进行有限元热分析；利用热分析获得的节点温度点云数据与节点拓扑结构，自主设计仿真软件重建目标并获得目标的三维红外辐射场分布。本文详细介绍了仿真方案的实现过程，并给出了具有典型特征的红外目标仿真图像。这种建模方法对于国防军事仿真系统中的平台红外探测与实时红外场景生成具有重要意义。64883

毕业论文关键词  红外辐射特性  有限元分析  温度场   红外仿真

毕业设计说明书（论文）外文摘要

Title    A Research on the infrared simulation of ground targets                     

Abstract

The infrared characteristics of the target simulation is an important part of infrared visual simulation system. This article mainly researches on a target infrared characteristics of general simulation method based on the finite element analysis. Theoretical analysis was researched on the infrared characteristics of ground targets; Computer aided design software Solidworks was used to build geometric modeling; model imported to ANSYS is analyzed by finite element thermal analysis; node temperature point cloud data and topology structure were obtained, the three-dimensional distribution of infrared radiation field was reconstructed by independent design simulation system. This paper introduces in detail the implementation process of schemes, and puts forward the typical characteristics of the infrared target simulation image. This modeling method is important to infrared detection platform in defense and military simulation systems with real-time infrared scene generation.

Keywords  Infrared Radiation Characteristics    Finite element analysis  

Temperature Field                 IR Simulation

目次

1  绪论 1

1.1  红外成像仿真 1

1.2  国内外发展概况 2

1.3  本文的研究内容和结构 4

2  红外辐射及传热学理论概述 5

2.1  红外光谱 5

2.2  辐射度学基础 5

2.3  热辐射基本定律 7

2.4  传热学基础 10

3  几何建模 12

3.1  SOLIDWORKS软件简介 12

3.2  地面目标建模 16

4   地面目标的红外辐射模型 20

4.1  影响目标红外辐射特性的因素 20

4.2 车体各部分满足的方程 20

4.3  目标辐射通量计算模型 26

5  仿真 27