摘要
本文跟踪了国内外对空中目标红外辐射计算机仿真技术的研究成果,并在掌握与辐射模型相关的计算机图形学、空气动力学与传热学、辐射光学知识的基础上,改进了计算流程和部分算法,完成了目标对太阳、云层、大地的反射和目标表面辐射的建模计算,综合了背景和光源的红外辐射和成像计算的方法,实现了任意观测角度下1～20μm波长范围内的总辐射和光谱辐射亮度、单个光源辐射强度及背景辐射的计算,得到空中目标的红外图像和辐射数值计算结果,分析了谱段和观测方位对红外热辐射的影响。
The thesis tracks the native and foreign production of simulation technique of infrared radiant characteristic of air target. On the foundation of mastery of computer figure technique, aerodynamics, thermal transmission technique and radiant optics, the thesis improves holistic flowchart and partial algorithms, which achieve modeling and computation of target reflection of radiation [rom the sun, clouds and the earth and surface radiation of target. The thesis also synthesizes the radiant calculations of background and light sources, and the calculative method of imaging, achieves the calculations of total radiance, spectral radiance, radiant intensity of single source and background radiance through 1 to 20μm at optional observation vector, which generates the image of infrared radiation and numerical result of radiant calculation. The influence on infrared radiation is analyzed under different observation vector and spectrum.
出处
《电子测量技术》
2007年第12期37-40,56,共5页
Electronic Measurement Technology
关键词
空中目标
红外辐射
仿真
air target
infrared radiation
simulation
