摘要
建立了斜程传输中继镜系统模型,由地基系统、中继镜平台以及必要的地面和通信链路等组成,光源为1064nm、100kW功率的理想固体激光,中继镜平台位于光源斜上方45°、距离14.14km处,发射、接收、二次发射望远镜内外径分别为0.1m和0.5m。分析了模型参数条件下中继镜系统上行光束最优传输方式;在某地实测大气条件下,利用激光大气传输"4-D"程序及相关程序模块分别计算了中继镜系统和地基激光直接对高度100m、飞行速度500m/s目标的作用效果。根据相关标准以及中继镜系统对目标可作用时间长的特点,选取地基系统直接作用和中继镜系统作用的破坏阈值分别为3cm平均桶中功率密度1000W/cm2和200W/cm2,分析得出:直接作用与中继镜系统作用的最大水平距离分别为4.3km与8.8km;对不同位置目标选择不同作用方法,整套系统可完全覆盖18.8km水平距离的作用范围,大幅度拓宽了单一地基激光的作用范围。
The model of the slanting propagation relay mirror system was established, which was composed of the ground system, the relay mirror platform as well as the essential ground and the correspondence link, the source was an ideal solid laser which was of 100 kW and 1 064 nm, the relay mirror platform was located at 14.14 km away from the source slanting 45° above. The outer and inside diameter of the launching, receiving, secondary launching telescopes were both 0.5 m and 0.1 m. The most superior transmission mode of the relay mirror system＇s upward light beam was analyzed under the model parameter condition. The effect of the relay mirror system and the ground-based laser system on the target with 100 m height,500 m/s flying speed in some actual atmospheric condition were separately calculated by using the ＂4-D＂ slanting path procedure. Because the relay mirror system effecting on the target can be a long time,in accordance with the relevant literature, damage threshold standard of the ground-based laser system and the relay mirror system was identified to 3 cm average bucket power density 1 000 W/cm^2 and 200 W/cm^2 respectively. The coverage ranges of the convention high energy laser system and laser relay mirror system are 4.3 km, 8.8 km. For different position target different function method were used,the system can cover the 18.8 km contour interval completely. The relay mirror system can largely opens up the laser system coverage range.
出处
《红外与激光工程》
EI
CSCD
北大核心
2009年第2期245-249,共5页
Infrared and Laser Engineering
基金
国防科技大学创新基金资助项目(S070701)
关键词
高能激光技术
中继镜系统
高能激光系统
数值模拟
High energy laser technology
Relay mirror system
High energy laser system
Simulation
