CAJ | 학술논문

航空感器是获取地面信息的重要工具,高马赫飞行条件下光学窗口的数学模型是开展高速航空感成像研究的基础.高马赫飞行会对光学窗口的形状和折射率分布造成影响,进而影响感器的成像质量.为保证或提高航空感器成像质量,需要研究高马赫飞行条件对窗口造成的影响,即建立该条件下光学窗口的数学模型.首先,给出高马赫飞行条件下有关光学窗口的问题描述,并给定输入参数和进行分析的边界条件;然后,分别建立光学窗口的温度场模型和面型模型,并进一步建立折射率与温度间的函数关系;最后,推导得到高马赫飞行条件下光学窗口的数学模型.
항공감기시획취지면신식적중요공구,고마혁비행조건하광학창구적수학모형시개전고속항공감성상연구적기출.고마혁비행회대광학창구적형상화절사솔분포조성영향,진이영향감기적성상질량.위보증혹제고항공감기성상질량,수요연구고마혁비행조건대창구조성적영향,즉건립해조건하광학창구적수학모형.수선,급출고마혁비행조건하유관광학창구적문제묘술,병급정수입삼수화진행분석적변계조건;연후,분별건립광학창구적온도장모형화면형모형,병진일보건립절사솔여온도간적함수관계;최후,추도득도고마혁비행조건하광학창구적수학모형.
Aerial remote sensor is very important for obtaining ground information. For high-mach flight condition, the mathematical model of optical window is the foundation for developing research on remote imaging. The shape and refractive index distribution of optical window are affected by high-mach flight condition, so that the image quality of remote sensor would also be affected. It is necessary to establish mathematical model of optical window in order to improve image quality. Firstly, optical window under high-mach flying condition was described and input parameters and boundary conditions of analysis were defined. Secondly, the temperature field model and deformation model of optical window were established. Then, the characteristics of refractive index was presented as a function of temperature. Finally, the mathematical model of optical window under the condition of high-mach flight was derived.