舰船尾流散射特性的研究

Study of scattering properties by ship wakes

利用Mie理论计算了单个气泡和舰船尾流横截面内气泡群的体散射函数。计算结果表明尾流中心的后向散射高于尾流边缘的。舰船尾流横截面内气泡群的散射与气泡大小，气泡尺寸分布和尾流深度有关系；在散射角180°附近后向散射增强显著；在散射角60°-80°之间，气泡群的散射相对于相邻角度有所增强。

Based on Mie theory, volume scattering functions of tingle bubble and bubble populations in the cross section of ship wakes are calculated. Results show that backsoattering by bubbles in the center of ship wakes is much higher than that by bubbles at the edge of ship wakes. Scattering properties relate to not only the bubble size and the bubble size distribution, but also the wake depth. Results also indicate that backscattering enhancement by bubbles is clearly visible near 180°. Scattering between 60° and 80° is elevated relative to other scattering angles in the neighborhood.