爆炸型红外烟幕衰减特性模型的实验验证研究

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中图分类号：TN957.52 文献标志码：A DOI：10.12305/j.issn.1001-506X.2025.03.05

Experimental verification research on the attenuation characteristics model of explosive infrared smoke screen

LIN Juan，ZHU Xijuan，LIU Xingrun，LI Haotong，WU Kaifeng，DONG Yanbing* （Beijing Instituteof Enuironmental Characteristics，BeijinglOo854，China）

Abstract：Red phosphorus smoke screen bomb is an efective interference method against infrared detection.The smoke screen bomb explodes and spreads to form a smoke screen.The attenuation distribution characteristics of smoke screen on thedetected target arethe basis for evaluating its shielding performance.The typical attenuation characteristics model of explosion infrared smoke screen includes a diffusion model for explosive smoke formation and a smoke screen transmitance calculation model based on Mie scattering theory. Based on this，experiments are designed and carried out to measure the microscopic optical characteristics of smoke screenand the infrared attenuation characteristics of red phosphorus smoke screen bomb in the field.The experimental results indicate that the particle size of the smoke screen is mainly concentrated in the range of 10-75μm ，and the shape tends towards spherical particles.Compared with the time-varying transmittance results obtained from field testing，the average relative error of the medium wave transmitance calculation results in smoke screen attenuation characteristics model is 16.3% ，and the average relative error of the long wave transmittance is 15.8% ．The fraction density of smoke screen components calculated by the diffusion model is consistent with the trend of the measured smoke screen transmittance.The calculation model results areconsistent with the experimental data analysis.There is a certain deviation between the spherical assumption of smoke screen particles，the setting of component types in thearticleand theactual state.Further verification analysis of the three-dimensional physical field of smoke screen is needed to improve the smoke screen attenuation model.

Keywords：smoke screen；red phosphorus；Mie scattering；transmittance；particle number density

0 引言

烟幕是光电对抗中的有效防护手段，其机理是利用烟幕颗粒对光波的吸收与散射作用来衰减被保护目标的辐射或反射光波，使对方侦察、探测等光学设备无法接收到强度足够的目标信号[1-3]，从而达到保护目标的目的。（剩余15867字）