基于大气红外特征的作用距离建模与计算  

Modeling and Calculation of Action Distance Based on Atmospheric Infrared Transmittance

作　　者：毛羽忻 孙铭礁[1] 江凯 陈寿青 MAO Yuxin;SUN Mingjiao;JIANG Kai;CHEN Shouqing(Northern Vehicle Research Institute,Beijing 100072,China;Faculty of Information Technology,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]中国北方车辆研究所,北京100072 [2]北京工业大学信息学部,北京100124

出　　处：《火炮发射与控制学报》2021年第3期82-86,共5页Journal of Gun Launch & Control

摘　　要：红外探测装置是光电系统的重要组成部分。目标红外辐射在经过大气时与大气中的成分相互作用影响,从而导致目标红外辐射的衰减,影响了如红外探测系统、热成像系统的性能。通过研究大气环境对红外探测装置作用距离的影响,根据已有理论依据构建出大气系统对红外辐射的透射率模型;并计算出大气透射率,利用基于NETD距离模型及相关系统性能参数和指标,通过迭代计算,可求出目标与探测器之间的红外作用距离,分析计算了主要因素对作用距离的影响。该研究为红外探测系统方案设计及性能优化提供数据支撑,也为红外数字仿真系统构建提供了必要条件。The infrared detecting device is one of the important parts in a photoelectric detecting system.However,infrared radiation interacts with the components of the atmosphere when passing through it,which leads to the attenuation of infrared radiation and affects the performance of the infrared trac-king system and thermal imaging system.Based on existing theories,the transmittance model of the atmospheric system to infrared radiation is constructed,and the transmittance of the atmosphere is calculated.The action distance between the target and the detector is estimated by iteration based on the Noise Equivalent Temperature Difference distance model and related system performance parameters.The influence of main factors on the action distance is analyzed.The result provides data support for the scheme design and performance optimization of infrared detecting systems,and also provides necessary conditions for the construction of infrared digital simulation systems.

关 键 词：红外辐射 大气透射率 红外距离估算 大气能见度 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]