水中粒子偏振效应的变化对激光水下探测领域的研究具有重要意义。针对不同粒子多次散射对后向散射光强以及偏振度的影响规律问题,基于激光偏振特性理论,通过实验测量的方法,对比分析了线偏振激光入射不同气泡大小和不同气泡数密度形成的气泡幕、不同气泡幕所在距离、洁净水与混浊水、不同入射角度情况下回波信号在强度和偏振度特性上的差异性,验证了水下激光偏振特性变化用于激光水下探测领域的可行性。 The change of polarization effect of water particles is of great significance to the research of laser underwater detection. Aiming at the problem of the influence of multiple scattering of different particles on the intensity and polarization degree of backscattering, based on the theory of laser polarization, the bubbles formed by different sizes of bubbles and different numbers of bubbles were analyzed by experimental measurement Curtain, the distance between different bubble curtains, clean water and turbid water, the difference of the intensity and the degree of polarization of the echo signal under different incident angles, which verifies that the variation of the polarization characteristics of the underwater laser is feasible for the underwater laser detection Sex.