旋转飞行靶激光辐照参数解析求解

Analytic Solution of Laser Irradiation Parameters for the Rolling Flying Target

激光辐照参数是研究激光对飞行靶目标毁伤效应的基础,主要包括辐照中心点位置、辐照面域和功率密度分布。以激光辐照水平匀速运动和抛物线运动的旋转圆柱体靶为背景,假定激光辐照飞行靶交汇场景,给出交汇目标参数,建立激光辐照交汇模型;推导出辐照中心点位置、辐照面域和功率密度分布等辐照参数的解析表达式。仿真结果表明:辐照参数是随靶目标飞行不断变化的量;激光功率密度分布为参数不断变化的三维椭圆形高斯函数;靶目标旋转会引起辐照中心点位置和辐照面域的变化,进而对温度场分布和激光毁伤效应产生一定的影响。解析求解结果为研究激光对飞行靶的辐照效应奠定了参数基础。

The irradiation parameters are the foundation to study damage effect of flying target by laser,which include the location of irradiation center point,irradiation area and power density distribution.Taking the laser irradiating horizontal uniform moving target and parabolic moving target as the background respectively,the assumed encounter scene and parameters are given.Then,the analytical calculation models of the location of irradiation center point,irradiation area and power density distribution are derived.The simulation results show that the irradiation parameters vary with the rolling and flying of target.The power density distribution in irradiation area is a varying three-dimensional elliptic Gaussian function.The rolling of target results in varying of location of irradiation center point and irradiation area,and influences temperature field of target and damage effect by laser.The analytical solutions are foundations for analyzing the effect of laser irradiating flying target.