Analysis On Target Characteristics Of The Infrared Multiband

This paper mainly studies the analysis on the target characteristics under different infrared wavelengths.The target mainly selects a fighter flying in the air.The characteristic analysis is mainly to analyze the infrared radiation characteristics of the fighter.Main works have the following several aspects:Firstly,the exordium.This paper detailedly introduces the research background,purpose and meaning of this topic.Refer to the forefront information of the domestic and foreign relevant direction,understanding the related methods and research results,it has accounted for the main research content of this paper in detail.Secondly,the theoretical basis of the infrared multiband image acquisition technology and the target infrared radiation characteristics.This paper mainly introduces the detection mechanism of the infrared multiband,the composition and the working principle of the infrared multiband sensors for the infrared multiband image acquisition technology.Meanwhile,this paper mainly introduces the rules of three typical radiations which contain the blackbody radiation,the graybody radiation and the gas radiation for the target infrared radiation characteristics.Thirdly,the modeling technology research of the fighter.A three-dimensional geometric model of the fighter is established based on a geometry modeling software called AutoCAD2014.Then the infrared radiation distribution of the fighter’s engine exhaust nozzle,tail frame and skin is analyzed and calculated based on a software called FLUENT.Considering the main part of the fighter’s infrared radiation containing the engine exhaust nozzle,the tail flame and the skin,and each part of the infrared radiation intensity being different,it is necessary to devide several parts of obvious radiation change carefully to make the infrared effect more real during a three-dimensional geometric model is established and the simulation is analyzed.Fourthly,the analysis on characteristics of the infrared multiband image acquisition.In this paper,images of different bands have been preprocessed.The fighter’s brightnesses and details of different bands have been studied.The contrast between the fighter and the background has been analyzed.The possible interference has been analyzed.The image fusion of different bands has been studied.Lastly,the effect of the actual environment on the infrared radiation characteristics of the fighter.We can respectively conclude the transformation law of the fighter’s infrared radiation characteristics under the influence of several factors by the method of controlling variables,which only one of the factors is changed in case of other factors unchanged.The effect of the skin’s infrared radiation distribution has respectively been studied by conditions of the fighter’s flight attitude,the solar radiation,the fighter’s flight altitude,flight speed and clouds.