红外伪装涂料发射率的季节性要求

何梓健; 时家明; 汪家春; 袁忠才; 赵大鹏; 林志丹; 冯玥玥

doi:doi:10.3788/gzxb20154403.0304002

光子学报, 2015, 44 (3): 0304002, 网络出版: 2015-04-14

红外伪装涂料发射率的季节性要求

Seasonal Requirement of the Infrared Camouflage Paint′s Emissivity

论文大纲

何梓健 ^*时家明汪家春袁忠才赵大鹏林志丹冯玥玥

作者单位

脉冲功率激光技术国家重点实验室, 合肥 230037

红外伪装发射率季节性数值分析 Infrared camouflage Emissivity Seasonal Numerical analysis

摘要

为了研究伪装涂料8-14 μm波段的平均发射率在不同季节的取值范围, 结合太阳辐射, 植被温度以及气温的一日变化, 建立目标及单一植被背景在晴朗天气情况下不同季节的一日辐射温度变化模型.以合肥地区为例, 分别以春分、夏至、秋分、冬至四个节气的日气候状况代表春夏秋冬四季的气候特征, 采集该地区在四个节气近五年的日值气侯数据, 对覆盖不同发射率伪装涂料的目标以及植被背景在四个节气中从6时到22时的辐射温度变化进行模拟.获得目标和植被背景的日辐射温度变化数据, 计算不同覆盖发射率值的伪装涂层时的目标和背景的欧氏距离和伪装效率.利用欧氏距离和伪装效率对目标的伪装效果进行分析.当欧氏距离最小时目标与植被背景红外特征最接近, 春夏秋冬欧氏距离最小时的发射率值依次为0.58、0.33、0.41、0.86；以参考目标与背景的辐射温度差控制在4K以内为实现隐身的标准, 春夏秋冬伪装效率最高时的发射率值依次为0.6、0.3、0.4、0.9.

Abstract

To analyses the seasonal requirement of camouflage paint′s average emissivity in 8-14 μm waveband, after simulating the change of the solar radiation, the vegetative cover′s temperature and the air temperature in one day, a temperature model of target and vegetative cover that display the changing of their radiation temperature in one day of different seasons was built.Hefei as an example, represent four seasons′ climate by the weather conditions of spring equinox, summer solstice, autumnal equinox and winter solstice and collect Hefei′s climate data of these solar terms in recent five years.Imitated the radiation temperature of target that covered the camouflage paint with different average emissivity in 8-14 μm waveband and vegetative cover from 6 to 22 in these solar terms.The Euclid Distance and the camouflage efficiency were obtained by the radiation temperature data to analyze the camouflage effect.When the Euclid Distance is least the infrared characteristic of target is closest to the vegetative cover′s.In this condition, the emissivities in different seasons are 0.58, 0.33, 0.41 and 0.86.Radiation temperature difference between target and background within 4K is the standard to achieve stealth.Reference this standard, the target has the best camouflage efficiency in different seasons when the emissivities are 0.6, 0.3, 0.4 and 0.9.

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何梓健, 时家明, 汪家春, 袁忠才, 赵大鹏, 林志丹, 冯玥玥. 红外伪装涂料发射率的季节性要求[J]. 光子学报, 2015, 44(3): 0304002. HE Zi-jian, SHI Jia-ming, WANG Jia-chun, YUAN Zhong-cai, ZHAO Da-peng, LIN Zhi-dan, FENG Yue-yue. Seasonal Requirement of the Infrared Camouflage Paint′s Emissivity[J]. ACTA PHOTONICA SINICA, 2015, 44(3): 0304002.

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