摘要
为了计算低风速下海面的激光反射特性,采用北海联合海浪计划(JONSWAP)非稳态海谱模型,结合线性滤波方法,将入射激光光斑所覆盖的海面分割为多个微小平面,再采用几何光学方法,对入射到每个微小平面上的光线的反射光进行理论计算,通过仿真,取得了二维风成海面对激光反射的仿真结果。结果表明反射角在镜面反射方向和入射反方向的±30°范围内,反射方位角在风向或者反风向2个方向,海面反射光能量较为集中。
In the interest of calculating the laser reflection characteristics of sea surface under low wind speed, this paper adopts the unsteady sea spectrum model of joint north sea wave project （JONSWAP）to divide the sea surface covered by the incident laser beam into many small planes combining with linear filtering method, then uses geometrical optics method to calculate the reflec- ted light of each incident light to each small plane theoretically, through the simulation, obtains the simulation results of the laser reflected light in 2-D windy sea surface. The results show that.the reflection angle is in ±30° of the vertical direction or incident direction ;the reflective azimuth is in the wind direction or against the wind direction;the reflected light energy is relatively concentrat- ed.
出处
《舰船电子对抗》
2016年第4期25-28,共4页
Shipboard Electronic Countermeasure
关键词
大气与海洋光学
反射特性
几何光学
风成海面
atmospheric and ocean optics
reflection characteristics
geometrical optics
windy sea surface
