海面对激光的方向反射率分布研究

Analysis of Directional Reflectance Ratio of Sea Surface for Laser

利用随机面元模型,对海面的激光方向反射率分布进行了理论分析,并对多种典型条件下海面对激光的方向反射率分布进行了数值模拟.结果表明,海面的总反射率较低,约为1%～6%,但在入射角超过40°后,总反射率快速增大.激光入射角为30°、海面风速为1～14m/s时,激光的方向反射率都比较大(0.1～0.48sr范围内).

With the random facet model, the directional reflectance ratio of the sea surface is analyzed theoretically. The special distribution of the reflection on the seawater surface is simulated numerically under various typical circumstances. It shows the total reflection is comparatively low, generally about 1% -6%, but increases rapidly with incident angle when the incident angle is greater than 60°. Under the circumstance that the wind speed is between 1 - 14m/s and the incident angle is 30°, the directional reflectance ratio is quite big in the solid angle of 0. 1 -0.48 sr.