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Proceedings Paper

Numerical simulation investigation of a new approach generating phase screens for modeling a turbulent media
Author(s): She Chen; Hai-Xing Yan; Shu-Shan Li
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Paper Abstract

In this paper, the theoretical base of the covariance approach for generating random phase screens is analyzed, and corresponding computer program is compiled. Preliminary numerical simulation investigation of this new approach is carried out. We propose to use three methods to evaluate the generated phase screens in a combining way. It is found that a comparison of the phase structure function of generated phase screens with the theoretical one is not enough and often inefficient. Open loop results and close loop results by using phase screens generated by the covariance approach are obtained and compared with those by using phase screens generated by the spectral approach for the first time within our knowledge. It is shown that the phase screens generated by covariance approach include more abundant frequency components than those generated by the spectral approach and these frequency components have obvious influences on the open loop results and the close loop results.

Paper Details

Date Published: 6 October 2005
PDF: 12 pages
Proc. SPIE 5903, Astronomical Adaptive Optics Systems and Applications II, 59030W (6 October 2005); doi: 10.1117/12.616131
Show Author Affiliations
She Chen, Institute of Mechanics, CAS (China)
Hai-Xing Yan, Institute of Mechanics, CAS (China)
Shu-Shan Li, Institute of Mechanics, CAS (China)

Published in SPIE Proceedings Vol. 5903:
Astronomical Adaptive Optics Systems and Applications II
Robert K. Tyson; Michael Lloyd-Hart, Editor(s)

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