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Modeling and application analysis of operating range of air-based infrared system
- Optics and Precision Engineering Vol. 28, Issue 6, Pages: 1295-1302(2020)
- 作者机构：
1.航天工程大学, 北京 101416
2.中国人民解放军95859部队，甘肃 酒泉 735018
- 作者简介：
- 基金信息：
DOI：10.3788/OPE.20202806.1295
CLC： V248.1Received：02 December 2019，
Accepted：21 January 2020，
Published：15 June 2020
- 稿件说明：
移动端阅览
Wei-jie WANG, Jian HUANG, Guang-fu YUAN, et al. Modeling and application analysis of operating range of air-based infrared system[J]. Optics and precision engineering, 2020, 28(6): 1295-1302.
Wei-jie WANG, Jian HUANG, Guang-fu YUAN, et al. Modeling and application analysis of operating range of air-based infrared system[J]. Optics and precision engineering, 2020, 28(6): 1295-1302. DOI： 10.3788/OPE.20202806.1295.
摘要
针对现有红外系统作用距离模型影响因素考虑较少、难以准确评估系统探测能力及目标红外隐身效果的问题，开展空基红外系统作用距离建模及应用案例分析。分析典型红外系统作用距离的影响因素，定义大气光谱透过率与作用距离的隐函数，基于大气垂直高度层上温度差异明晰光谱辐射强度分布模型，考虑目标红外光谱辐射线型特征推导大气透过率加权修正系数，进而构建了综合目标光谱辐射特性、大气温度和红外系统高度等多种因素的空基红外系统对点目标作用距离模型。基于该模型，对不同类型空基红外系统的探测能力及不同类型目标的红外隐身性能进行了比较和分析。结果表明，对于导弹、飞机类目标，采用大口径、长波段系统设计有利于提升空基红外系统对目标迎头方向探测能力，大口径中波红外系统对目标尾后方向探测能力更强；小尺寸、低表面发射率、低速飞行目标的红外隐身及突防能力更好，目标在平流层飞行时隐身性能要优于对流层和中间层飞行目标。
Abstract
In the existing action distance model of the infrared system
the influence factors are not thoroughly considered.Moreover
it is difficult to accurately evaluate the detection ability of the system and the infrared stealth effect of the target.Therefore
to address these issues
the action distance model and an application case analysis of the air-based infrared system were presented in this work.Based on the analysis of the influencing factors of the typical working distance of the infrared system
the implicit function of the atmospheric spectral transmittance and the working distance were defined. The distribution model of the spectral radiation intensity was clarified based on the temperature difference between the vertical layers of the atmosphere.The weighted correction coefficient of the atmospheric transmittance was deduced
considering the characteristics of the infrared spectral radiation line of the target.Next
the model of the distance between the air-based infrared system and the point target was built
which included the characteristics of the target spectral radiation
the atmospheric temperature
and the height of the infrared system. Based on this model
the detection capability of different types of air-based infrared systems and the infrared stealth performance of different types of targets were compared and analyzed. The results show that for aircraft and missile targets
the design of a large-aperture long-wave infrared system is helpful in enhancing the detection ability of the air-based infrared system regarding the head-on direction of the target.Furthermore
the large-aperture mid-wave infrared system has a stronger detection ability regardingthe rear direction of the target.The infrared stealth and penetration ability of a small-size
low-surface-emissivity
and low-speed flying target is better.Finally
the stealth performance of a target in the stratosphere is better than that of a target in the troposphere and that of a middle-layer flying target.
关键词
Keywords
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