Simulation Of A Moving Atmosphere By A Rotating Phase Plate

S. R. Lange; R. W. Knowlden,; T. S. Turner Jr.; W. W. Metheny

doi:10.1117/12.957895

29 November 1979 Simulation Of A Moving Atmosphere By A Rotating Phase Plate

S. R. Lange, R. W. Knowlden,, T. S. Turner Jr., W. W. Metheny

Proceedings Volume 0193, Optical Systems in Engineering I; (1979) https://doi.org/10.1117/12.957895
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

To simulate the wavefront perturbations produced when an optical system moves or scans through a static atmosphere, a rotating phase plate was situated in the vicinity of a focus in a collimator. The phase plate is a mirror with statistically defined deviations from flatness etched into the surface. Its diameter is considerably larger than the collimator clear aperture at that location. The collimator beam is decentered from the rotation axis such that the mirror rotates past the beam and presents a changing wavefront whose appearance to the test optical system resembles atmosphere streaming past the aperture. The computer simulation of the statistical perturbations, fabrication method, interference testing, and computerized reduction of the results to compare with the experimentally observed five-thirds law are discussed.

Citation Download Citation

S. R. Lange, R. W. Knowlden,, T. S. Turner Jr., and W. W. Metheny "Simulation Of A Moving Atmosphere By A Rotating Phase Plate", Proc. SPIE 0193, Optical Systems in Engineering I, (29 November 1979); https://doi.org/10.1117/12.957895

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