一种光谱偏振成像系统设计及应用

为了获取目标和背景的偏振信息，提高地面目标识别的准确度，提出一种光谱偏振成像探测系统。该系统采用旋转偏振片的方式对入射光的偏振状态进行调制，通过旋转滤光片进行光谱选择，从而实现光谱偏振成像探测。通过对该系统偏振度的探测精度进行实验测试，结果表明，所设计的光谱偏振成像探测系统达到4%的探测精度。利用该系统对地物背景中的迷彩伪装板进行了探测实验，分析所得的偏振度图像发现，目标在背景中较为明显，与草地及土壤背景区域偏振度的差值分别达到0.292和0.283。

Design and application of spectral polarization imaging detection system

In order to acquire the polarization information of target and background and improve the accuracy of detection for ground target, a spectral polarization imaging detection system was proposed, which could modulate the polarization state through revolving the polarizer and select spectra through revolving the filter so as to achieve spectral polarization imaging detection. An experiment was designed to validate the result of the polarization degree acquired from the system. The result shows that the system can reach the detection accuracy up to 4%. Additional, the detection experiment about the camouflage coating target which was under typical woodland background was conducted by the system. The result of image processing indicates that the target is prominent in the background, the polarization-s difference is up to 0.292 between target and soil,while 0.283 between target and grass.