基于Stokes矢量和Mueller矩阵,推导了任意偏振方向的线偏振度表达式。在入射面内改变探测角和偏振方向,通过实验室和野外偏振检测实验验证了推导结果,并以目标与背景偏振度对比为主要指标研究了影响伪装目标偏振检测的偏振方向因素。研究结果表明：探测角在镜面反射方向附近,不同偏振方向的偏振度对比波动较小;虽然野外环境的结果波动稍大,但当以偏振片最大透光轴方向垂直于入射面为参考方向时,偏振方向间隔60°和45°的偏振度对比较间隔30°稳定;计算表明偏振图对比度明显高于强度图对比度,间隔60°的偏振度对比较高,间隔45°的次之,间隔30°的偏振度对比较差,偏振检测效果不佳。

The expression for linear polarization degree of polarization direction at any angle is deduced based on the Stokes vector and Mueller matrix. By changing detection angle and polarization direction in the incident plane,the correctness of the expression is verified by the laboratory and field polarization detection experiment . With polarization degree contrast of target and background as the main index,polarization direction of the effects of camouflage target polarized detection is studied. The results show that the polarization degree contrast of different polarization direction has small fluctuation in reflection direction. Although the above results have larger fluctuation,polarization degree contrast of the polarization direction of interval 60 ° and 45 ° polarization image is more stable than of interval 30 °. Polarization image contrast is higher than the intensity image contrast. It is high polarization degree contrast of interval 60°,and interval 45° is second place,and interval 30 ° is poor,polarization detection effect is not good.