Method for inclusion of low-frequency contributions in numerical representation of atmospheric turbulence

Bruce J. Herman; Lisa A. Strugala

doi:10.1117/12.18342

1 May 1990 Method for inclusion of low-frequency contributions in numerical representation of atmospheric turbulence

Bruce J. Herman, Lisa A. Strugala

Proceedings Volume 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere; (1990) https://doi.org/10.1117/12.18342
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

The standard FFT, optical propagation computer code-applicable method for calculating realizations of phase screens to simulate the effects of atmospheric turbulence is presently modified to include such LF aberrations as tilt. It is shown that the modified phase screens yield superior statistical representations of Kolmogorov turbulence, and comparisons of simulations employing such modified phase screens with the results of theoretical calculations for Strehl ratio with finite outer-scale effects are presented. The modified method is noted to be highly memory-efficient, relative to the phase screens used for the propagation simulations.

Citation Download Citation

Bruce J. Herman and Lisa A. Strugala "Method for inclusion of low-frequency contributions in numerical representation of atmospheric turbulence", Proc. SPIE 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere, (1 May 1990); https://doi.org/10.1117/12.18342

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