Abstract
This paper presents the results of experimental and modeling metrological studies on a digital goniometer, measuring angular orientations of an image of an optical mark using a digital camera array. A fully digital technology is also described for measuring angles using virtual angular-scale carriers (digital images). By using a mathematical model for the goniometer, it is shown that the error in angle measurements can be reduced to the level of thousandths of an arcsecond in principle.
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