Rotation angle measurement device: Principle of operation and initial calibration results

A new device is developed for measurement of current rotation angle of rocking platform. The device is based on the new multivalued measure of plane angle - holographic prism [1]. A row of linear CCD arrays is used as a reading unit. The device realizes the method of comparison with measure, which excludes the effect of platform orbital motion and provides highly accurate measurement. The first calibration results are given.