摘要
利用计算机的强大建模功能模拟生成红外场景,已经成为红外视景仿真领域中的重要研究课题之一。视景仿真技术结合了当今科学技术中多种现代化尖端手段,极大地拓展了人类的视野和能力,在科学技术领域起到了极其重要的作用。
动态红外图像的计算机生成技术既可以降低武器系统的研制成本、缩短研制周期,又能提高整个系统的效费,使其具有重要的理论意义和广泛的应用前景。
本文主要研究红外仿真图像的计算机生成方法,使用Multigen Creator/Vega工具进行了目标的建模和红外仿真,结合MFC的方式进行视景驱动的二次开发,完成了低空红外预警仿真系统的建立。
●本文首先介绍了国内外红外仿真发展的现状,分析了红外仿真的特点,根据课题实际,给出了论文要解决的关键问题;
●其次研究了目标红外辐射和背景辐射的特点与模型,分析了红外辐射在大气中的传播性质,给出工程计算方法,分析了红外探测器的效应的模型,阐述了动态生成红外图像的设计思路和实现方法;
●然后利用Creator建模软件,综合三维建模技术构造了符合红外仿真的需求的飞机三维模型,使用实例技术减小了系统资源消耗;
●结合红外仿真理论在Vega视景仿真软件下,按照红外图像产生的物理过程,使用TMM工具仿真了物体的自发辐射效果,研究了MAT工具生成了大气环境的模型的方法,使用Sensor Vision和Sensor Works模块仿真了红外探测器的输出效果。同时研究了路径模块,建立了飞行器的运动路径;使用粒子系统模块,完成了飞机的尾焰效果的模拟;
●针对仿真平台的实际,完成基于MFC的Vega红外仿真系统,详细阐述了MFC下二次开发的技术重点,并给出了实现方法;同时使用屏幕捕获技术和Zlib压缩算法对图像进行捕获,使用Socket实现了客户机和服务器间的数据传输,在局域网中实现了红外仿真图像的实时传输和交互控制。
●本文的研究在实时红外仿真工作中有着重要的现实意义,生成的红外图像有很好的真实性,在局域网中可以基本达到实时传输的需求,实验效果良好。本文的研究方法和采用的关键技术,对今后的开展红外仿真实验验证研究具有参考价值。
The simulation of infrared scene by computer's modeling capability is one of the important researches in the field of infrared (IR) simulation technique. Being involved with so many modern high-tech approaches , the technique of scene simulation has greatly widened the visual field of human beings and promoted our ability. It plays an important role in scientific research.
The dynamic IR scene generation technique can reduce the cost of developing a new weapon system. All of these lead to its great theoretical significance and wide application perspective.
This thesis is focus on how to use computer to generate dynamic IR images. A method of the IR sence simulatoin based on Multigen Creator and Vega is deseribed, which include the creating of three-dimensional(3D) model and IR modeling.
Firstly, Development situation of IR scene simulation is introduced. The method is proposeda ccording to the function module of the system.
Sceondly, researching infrared radiation characteristic of target and backgrouds, the attenuation characteristic of inrfaerd radiation through is analyzed and the atmospheric permeance and infrared receiver effects of inrfared radiation is given. The design ideas and implementation method to generate dynamic IR scene with computer are addressed.
Thirdly, the 3D models of flight are designed on the basis of the study of modeling techniques by Creator. The instance skill is used to reduction the system resources.
Fourthly, as the process of IR image recvied by detector, TMM is used to give texture materials attribute. The method to build atmospheric permeance by MAT is researched. Senso Vision and Sensor Works is introduced through this thesis.
Finally, a MFC-based Vega exploitation is complied, the emphasis is analysised; Screen capture and Zlib method is used to capture IR images, the real-time transmit and interaction control have good efficiency.
The IR scene images are ture to nature, and the transmission rate of Pordueing IR images is greatly increased. The research methods and key technology in this paper are valuable for the future research on dynamic simulation of target's IR images.
引文
[1]A.D.Shef,Computer generated IR imagery:a first principles modeling approach,SPIE,1988:933
[2]Ballard,J.R,Smith,A multi-wavelength thermal infrared and reflectance scene simulation model,IGARSS,1,2002
[3]MultiGen-Paradigm Inc.Vega Programmer's Guide.Dallas:MultiGen-Paradigm Inc,2001
[4]张海兴,张建奇,杨威等.飞机红外辐射的理论计算.西安电子科技大学学报.1997(3):78-81
[5]MultiGen-Paradigm Inc.Vega Snesor Help.Dallas:MultiGen-Paradigrn Inc,2001
[6]王乘,周均清,李利军.Vega实时三维视景仿真技术.第一版.武汉:华中科技大学出版社,2005
[7]王乘,周均清,李利军.Creator可视化仿真建模技术.第二版.武汉:华中科技大学出版社,2006
[8]窦晓牧,岳晓奎,罗建军等.喷气式飞机全向红外辐射特性计算方法.红外技术,1997,19(3):5-7.
[9]徐南荣,卞南华.红外辐射与制导.北京:国防工业出版社,1997
[10]小哈德逊R.D.红外系统原理.北京:国防工业出版社,1975
[11]姚连兴,仇维礼,王福恒.目标和环境的光学特性,北京:宇航出版社,1995
[12]郑晶,王祖林,赵毅寰.被动式红外探测器多波段成像的仿真.红外与激光工程2007:152-155
[13]杨德贵,黎湘,庄钊文.基于统一模型的典型地表红外辐射特性对比研究.红外与毫米波学报,2001(04):263-266
[14]龚卓蓉.Lynx图形界面.第一版.北京:国防工业出版社,2002
[15]张敬贤.微光与红外成像技术.北京:北京理工大学出版社,1995
[16]李桦,汤心溢,施家明.红外动态景像仿真中探测器效应的应用.量子电子学报,2001(18):20-25
[17]张保民.成像系统分析导论.第1版.北京:国防工业出版社,1992
[18]童小念,罗铁祥,李志玲.MultiGen Creator建模技术的优化与实现.计算机系统应用,2008(2):94-96
[19]郭佳,郭春.Creator中完整飞机外部模型的创建.科技创新导报,2008(3):14
[20]张佳福,董明晓,张强.基于Creator的塔式起重机建模技术研究.起重机运输机 械,2008(9):47-49
[21]王延红,袁媛,杨平利,江凌.建模软件Creator中的纹理映射技术.中国体视学与图像分析,2008 13(1):63-66
[22]杨述华,廖守亿,王仕成,张金生.应用Vega模块的红外成像系统仿真建模方法.探测与控制学报.2008 30(3):32-36
[23]候俊杰.深入浅出MFC.第二版.武汉:华中科技大学出版社,2008,8
[24]王炜.虚拟仿真系统导论.长沙:国防科技大学出版社,2007
[25]姚涛,李一凡.场景红外成像仿真原理和应用.计算机仿真,2004 21(1):96-98
[26]李明泽,毛学刚,范文义.MFC框架下基于Vega的视景驱动程序设计研究.现代计算机.2007(269):93-95
[27]Huffman,D.A."A method for the construction of minimum redundancy codes",Proceedings of the IRE,Volume 40,Number 9,September 1952
[28]杨宜禾,岳敏,周维.红外系统.第二版.北京:北京工业出版社,1995.199-212.
[29]张鸣平,张敬贤,李玉丹.夜视系统.北京:北京理工大学出版社,1993,10.
[30]Ebert DS,Advanced Modling Techniques for Computer Graphics,ACM Computing Surveys,1996,28(1):153-156
[31]蒋东兴,林鄂华,陈棋德,印敏,刘启新等.Windows Sockets网络程序设计大全.北京:清华大学,1999
[32]MultiGen-Paradigm Inc.Vega Options Help.Dallas:MultiGen-Paradigrn Inc,2001
[33]龚卓蓉.Vega程序设计.第一版.北京:国防工业出版社,2002
[34]常本康,蔡毅.红外成像阵列与系统.第一版.北京:科学出版社,2006
[35]ZOU Yue-ping,ZHANG Jian-qi.Review of simulation in infrared imaging system.Infrared and Laser Engineer.2002(5):432-436
[36]赵勋杰,李成金.红外半实物仿真系统的关键技术.红外与激光工程.2007(3):326-332
[37]Deutsch,P.and J-L.Gailly,RFC 1950- ZLIB Compressed Data Format Specification,Version 3.3,Aladdin Enterprises,San Francisco,1996.
[38]孙鑫,余安萍.VC++深入详解.北京:电子工业出版社,2006.6
[39]高思莉,刘鹏,汤心溢.红外焦平面阵列非均匀性仿真技术研究.半导体光电,2006(8):468-470
[40]http://dsd.lbl.gov/TCP-tuning/background.htm
[41]Gurevich E,Fein A.Maintaining uniformity of IR focal plane arrays by updating offset correction coefficients.Proc.SPIE,2003,4 820:809-820