The relation between the polarization technique and the enhance for the image contrast and the imaging range has been reported in this paper . the equation expressing the image contrast and the imaging range is calculated and the experimental data is acquired . the experimental data agree with the calculated result . it is shown quantitatively that the polarization technique improves the image contrast and imaging range greatly 阐述了水下成像清晰度和成像距离的增大与偏振成像技术的关系,推导了偏振成像系统图像清晰度与成像距离的关系式,并通过实验获得实测数据,根据推导的关系式分析并计算得到的结果与实测数据相符合,定量地说明了偏振技术提高了图像清晰度和成像距离
