激光辐照低慢小运动目标功率密度分析  

An Analysis of Power Density of the Low Slow Small Target Irradiated by Laser Beam

作　　者：韩晓飞[1] 蒙文[1] 李云霞[1] 李达[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《空军工程大学学报（自然科学版）》2013年第5期67-70,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61108068)

摘　　要：针对激光毁伤低慢小目标问题,建立了1.06μm激光斜程照射低慢小目标的模型。通过对该模型的仿真计算,得到了不同大气能见度条件下,激光透过率与目标天顶角和目标高度的关系曲线,及不同初始天顶角条件下,归一化功率密度与时间的关系曲线。分析了大气能见度,照射天顶角及目标飞行高度对目标表面归一化功率密度的影响,确定了激光防御低慢小运动目标过程中,激光照射的最佳条件,当照射初始天顶角θ0=arctanvT/2h时,可以使得在照射时间内,照射到目标表面的能量最大。To solve the damage problem of low slow small target caused by laser irradiation,a model of low slow small target(LLST)irradiated by a 1.06μm slant path transmission laser is established.Through simulation calculation using the model,the paper presents the transmission rate vs.the zenith angle and the altitude in various atmospheric visibilities and the normalized power density vs.time in different zenith angle.The factors of the normalized power density are analyzed,such as the atmospheric visibility,the zenith angle and the altitude.Furthermore,the best condition that the zenith angle can be determined in the process of the laser defense low slow small moving target,the surface energy is the largest in the irradiation time.

关 键 词：低慢小目标 激光毁伤 功率密度 斜程传输 天顶角 

分 类 号：TN249[电子电信—物理电子学]