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运用光散射原理和Mie理论,建立舰船尾流光散射模型,通过利用偏振光分别经过尾流气泡群以及静水后,偏振状态产生的差异,得出一种尾流测量的新方法。在这种方法测试下的结果显示,激光经过气泡尺寸为10～150μm微小气泡群以及静水,激光散射后偏振状况的不同。试验进一步比较了微小气泡群与大气泡群(气泡群尺寸大于150μm)散射后的偏振状况,得出两种回波信号强度各异,并且这两种不同类型气泡群都与静水的回波信号强度有着较大差异。该结果对用偏振光进行舰船尾流探测有着重要意义。
Using light scattering theory and Mie theory, the ship wake light scattering model is established. By using the difference of the polarization state of the wake after passing through the groups of wake bubbles and the still water respectively, a new wake wake measurement method is obtained. The results of this method test show that the laser passes through a bubble group with a size of 10 ~ 150μm and a small bubble group, and the difference between the polarization state after the laser light scattering. The experiment further compares the polarization state of the micro-bubble group with the large-sized bubble group (the size of the bubble group is larger than 150 μm), and finds that the intensities of the two echo signals are different, and both of these two different types of bubble groups are associated with the hydrostatic echo signal There is a big difference in strength. The result is of great significance for the detection of ship wakes with polarized light.