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GreenwoodFreq
fG = GreenwoodFreq(alpha,lambda,S,Atm)
Computes the Greenwood frequency for propagation given turbulence assumptions, engagement parameters, and wavelength. Returns NaN if propagation path intersects earth surface.
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Parameters |
Description |
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alpha [vector] |
Multiplier on turbulence model |
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lambda [scalar] |
Wavelength of laser (m) |
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S [struct] |
Engagement parameters. Must be a structure from EngagementStruct or GeomStruct. |
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Atm [struct] |
Atmospheric modeling parameter structure from AtmStruct. Atm must have wind profile/heading if calculation with wind is desired. |
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Return Values |
Description |
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fG [vector] |
Greenwood frequency (Hz) |
Greenwood, D. P. "Bandwidth Specification for Adaptive Optics Systems." J. Opt. Soc. Am., 67,390-393 (1979).
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Copyright (c) 2009. All rights reserved.
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Description