CAJ | 학술논문

针对高超音速飞行器不同于低速飞行器的红外辐射特性，提出了机载IRST系统红外探测高超音速飞行器的建模方法。重点利用高温边界层传热理论建立了高超音速飞行器蒙皮辐射特性模型，分析了排气系统和环境背景辐射特性，根据不同高度下大气层结构分布对红外辐射传输的影响，建立了大气斜程透过率模型，提高了透过率计算的准确性；考虑环境背景辐射的影响，给出了IRST系统对高超音速飞行器的作用距离模型。最后通过仿真实验分析了不同季节、高度和目标仰角下大气透过率特点，分析了不同仰角、速度和波段等因素下探测器对高超音速目标红外作用距离的影响，结论论证了所建模型的实效性。
침대고초음속비행기불동우저속비행기적홍외복사특성，제출료궤재IRST계통홍외탐측고초음속비행기적건모방법。중점이용고온변계층전열이론건립료고초음속비행기몽피복사특성모형，분석료배기계통화배경배경복사특성，근거불동고도하대기층결구분포대홍외복사전수적영향，건립료대기사정투과솔모형，제고료투과솔계산적준학성；고필배경배경복사적영향，급출료IRST계통대고초음속비행기적작용거리모형。최후통과방진실험분석료불동계절、고도화목표앙각하대기투과솔특점，분석료불동앙각、속도화파단등인소하탐측기대고초음속목표홍외작용거리적영향，결론론증료소건모형적실효성。
According to the infrared radiation characteristic of hypersonic vehicle different from low speed vehicle, a modeling method of using airborne IRST system to detect the infrared radiation of hypersonic vehicle is proposed. Emphasis is to establish the model of hypersonic vehicle skin radiation through using the theory of heat transfer of high temperature boundary. The exhaust system and environmental background infrared radiation are analyzed. Based on the influence of structure distribution of atmosphere under different height to infrared radiation, the model of tilt atmospheric transmittance is built, which improves the accuracy of transmittance. Considering the factor of environmental background radiation, the mathematics model of operating range of IRST for hypersonic vehicle is given. Finally, the atmospheric transmittance characteristic is analyzed through considering the different season. Height and angle of target, and some factors, including the elevation, speed and wave band etc., which effect on operating range of hypersonic target are discussed. The conclusion demonstrates the effectiveness of the model.