偏振检测技术用于水下目标探测,为复杂海洋环境下的目标探测提供了一条全新的技术途径。阐述了水下激光偏振探测的基本原理,并搭建了简单的实验系统,对不同材料的人造目标进行了探测。结果表明,不同材料的目标具有不同的偏振特性,偏振信息在改善水下人造目标检测性能方面具有重要的价值。提出了基于Matlab的图像处理方法,最终处理的偏振图像包含了目标的偏振信息和细节信息,提高了图像的对比度和清晰度。通过偏振图像处理,可以有效地区分不同水下条件中人造目标与自然背景,极大地压缩自然背景噪声。

Polarization detection method is used in underwater target image detection,which provides a new method for underwater targets detection in complicated ocean environment. The laser polarization detection principle is introduced,and a simple polarization detection system is constructed to detect different man-made targets. Experimental results show that different targets of different materials have different polarization properties,which is very useful for underwater targets detection and identification. An image processing method based on Matlab is proposed. Polarization images improve the definition and the contrast between targets and background. Therefore,man-made targets can be easily distinguished from natural background.