Abstract
We present the results of research of autocollimating null-indicator in the angle measurement system intended for measuring angles between normals to faces of optical polygons or mirrors. The autocollimating null-indicator is considered with analog signal processing based on its digitization and center of mass estimation. We present the results of modeling and analyze the dependence of the sampling point number and signal-to-noise ratio on the accuracy of the signal center of mass determination. The results of experimental research of the system are presented.
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