Study on aero optical effect for space infrared detection system

Huinan Guo; Yingjun Ma

doi:10.1117/12.2644389

12 October 2022 Study on aero optical effect for space infrared detection system

Huinan Guo, Yingjun Ma

Proceedings Volume 12342, Fourteenth International Conference on Digital Image Processing (ICDIP 2022); 123422J (2022) https://doi.org/10.1117/12.2644389
Event: Fourteenth International Conference on Digital Image Processing (ICDIP 2022), 2022, Wuhan, China

Abstract

High-speed aircraft is very important for space safety and scientific exploration. When aircraft flies in near space at high speed, thin atmosphere outside aircraft forms high-speed convection. For optical detection device, the convection will cause aero optical effect, which can seriously affect the detection range and sensitivity of remote sensing system. In order to discuss the impact of aero optical effect for infrared detection device, we study the formation mechanism of aero optical effect and analyze the model of radiation transmission. Through static window heating test and dynamic flow field wind tunnel test, we verify the thermal radiation influence of quartz window and high-speed flow filed for short wave infrared detection system. The experimental results show that for 900nm-1700nm short wave infrared imaging system, short wave infrared signal of target can filter through quartz window below its melting point temperature. By accurately controlling exposure time, the thermal radiation effect of high-speed flow field can be weakened, and the target contrast can be improved for infrared detection system.

Citation Download Citation

Huinan Guo and Yingjun Ma "Study on aero optical effect for space infrared detection system", Proc. SPIE 12342, Fourteenth International Conference on Digital Image Processing (ICDIP 2022), 123422J (12 October 2022); https://doi.org/10.1117/12.2644389

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