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Proceedings Paper

Phase and slope screen generator for spatially and temporally correlated unlimited length sequences
Author(s): Dennis A. Montera; Brent L. Ellerbroek; James M. Brown
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Paper Abstract

The ability to generate long sequences of spatially and temporally correlated phase and slope screens is critical to simulating adaptive optics system. Covariance based methods exist for generating short sequences of phase and slope screens which theoretically could produce the long sequences needed. However, implementing these methods for large sequences of frames is impractical with today's computer technology. FFT-based methods may be used to generate unlimited-length sequence which are periodic. This paper present a method for generating unlimited length sequences which are not periodic using optimal estimators. This method does not yield perfect spatial and temporal statistics for screens separated by large numbers of frames in time. However, the short term statistics for any frame are accurate, while the errors in long term statistics are small.

Paper Details

Date Published: 11 September 1998
PDF: 10 pages
Proc. SPIE 3353, Adaptive Optical System Technologies, (11 September 1998); doi: 10.1117/12.321729
Show Author Affiliations
Dennis A. Montera, Air Force Research Lab. (United States)
Brent L. Ellerbroek, Air Force Research Lab. (United States)
James M. Brown, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 3353:
Adaptive Optical System Technologies
Domenico Bonaccini; Robert K. Tyson, Editor(s)

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