26 September 1989 Optical Coordinate Transfer Assembly For Precision Boresighting Applications
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Boresighting involves precisely transferring angular coordinates from one point to another. This frequently arises in correlating directional information between systems such as optical telescopes or high-gain microwave antennas that are physically separated by a truss or support. Generally, the separating truss is not rigid to the accuracies required for precise alignment because of thermal, aerodynamic, and vibrational distortions typical of many practical environments. This paper presents a relatively simple concept for optically boresighting between any two points, in three degrees of angular freedom, and independent of the rigid body. Analyses and laboratory investigations indicate that sub-microradian accuracies, data rates exceeding 100 Hz, and dynamic ranges of approximately milliradians are feasible between points separated by over 10 meters.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Calvin W. Gillard, Calvin W. Gillard, Lawrence L. Ames, Lawrence L. Ames, Neal E. Buholz, Neal E. Buholz, "Optical Coordinate Transfer Assembly For Precision Boresighting Applications", Proc. SPIE 1111, Acquisition, Tracking, and Pointing III, (26 September 1989); doi: 10.1117/12.977968; https://doi.org/10.1117/12.977968

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