A novel, to the best of our knowledge, optical method using a high-speed polarimetry is proposed for real-time attitude tracking in an ultra-large measurement range. The attitude metrology utilizes the field-of-view effect in birefringent crystals, which is known as the birefringence deviates with the field-of-view angle of polarized light. The basic principle of the metrology is presented via theoretical derivation and has been verified in the static retardance measurement experiments. With a resolution test, a temporal resolution of 0.4 ms per attitude measurement and an angular resolution up to 0.0025°are achieved. With the help of a bubble level, the attitude angles of an object attached with a birefringent wave plate are obtained in the dynamic experiments, which have achieved an accuracy better than 0.02°. Additionally, the angular velocity and acceleration of the real-time measured roll angle can be extracted simultaneously. The experimental results demonstrate that the proposed metrology has great potential and advantages in the real-time attitude sensing.

中文翻译：

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基于双折射视场效应的高速偏振态计量学

据我们所知，一种新颖的使用高速极化仪的光学方法被提出用于超大测量范围内的实时姿态跟踪。姿态计量利用了双折射晶体中的视场效应，即双折射随偏振光的视场角而变化。通过理论推导提出了计量学的基本原理，并已在静态延迟测量实验中得到了验证。通过分辨率测试，每个姿态测量的时间分辨率为0.4 ms，角度分辨率高达0.0025°。借助于气泡水平仪，在动态实验中获得了附有双折射波片的物体的姿态角，其精度优于0.02°。另外，可以同时提取实时测得的侧倾角的角速度和加速度。实验结果表明，所提出的计量技术在实时姿态检测中具有巨大的潜力和优势。