激光后向散射式烟幕粒子测量方法研究

烟幕干扰是光电对抗防御来袭光电精确制导武器的重要手段,烟幕干扰对抗效能与实际气象条件、布放密度、防御目标特性等密切相关,实时测量烟幕的消光特性是评估烟幕干扰对抗效能的基本要求。本文对烟幕粒子的激光Mie散射机理进行了分析,建立了激光后向散射层析断层反演烟幕消光系数模型,通过试制的激光后向散射层析断层测量系统对三种典型烟剂发烟后烟幕消光系数进行了测量,结果表明该激光后向散射层析断层可有效对烟幕消光特性进行遥感测量,可为光电对抗烟幕干扰效果实时测量及效能评估提供支撑。

Research of smoke particle measurement with laser backward scattering

Smoke interference is an important means of defense against incoming photoelectric guided weapons.Smoke interference effectiveness is closely related to actual meteorological conditions,distribution density,defense target characteristic.The real-time measurement of smoke extinction properties is basic requirements of smoke interference effectiveness evaluation.The laser Mie scattering mechanism of smoke particles were analyzed,and the tomography fault inversion smokescreen extinction coefficient model of the laser backward scattering was established.Through the development of the tomography measuring system,smoke extinction coefficients were measured after three kinds of typical smoke agent smoke.The results show that the tomography of the laser backward scattering can effectively measure smoke extinction characteristics.The result can provide a support for real-time measurement and performance evaluation of smoke interference effect.