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 particle polarization effect in water is important for laser underwater detection. Aiming at the effect of multiple scattering of different particles on the backscattering light intensity and the degree of polarization, and based on the laser polarization characteristics theory, an experimental method is adopted. Under the same environmental conditions, the linearly polarized light incident on the water in the photon number of different bubble size, bubble number density, incident angles, location bubbles and turbid water, pure water are analyzed. The difference of the characteristics of the backward scattering light intensity and the degree of polarization are found. It verifies the feasibility of underwater laser polarization characteristics change in laser underwater detection.