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OpenLoopStrehl
[Strehl,StrehlTR] = OpenLoopStrehl(r0,D,[Dobs],[method])
Computes the Strehl ratio of a laser propagated through a turbulent medium. Returns the Strehl ratio for tilt-included, and the Strehl ratio for a tilt-removed beam (higher-order only).
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Parameters |
Description |
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r0 [vector] |
Atmospheric phase coherence length (Fried's parameter) (m) |
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D [vector] |
Diameter of transmit aperture (m) |
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Dobs [vector] |
(Optional) Diameter of transmitter central obscuration (m). Defaults to 0. |
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method [scalar] |
(Optional) Method for computing Strehl, 0 for LUT (default) or 1 for analysis. Must specify Dobs (can be []) to specify method. |
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Return Values |
Description |
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Strehl [scalar] |
Strehl ratio for tilt-included beam |
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StrehlTR [scalar] |
Strehl ratio for tilt-removed beam (higher-order only) |
Roggemann, M. C. and Welsh, B. M., "Imaging Through Turbulence," sec. 3.5.3, sec 3.5.4. (1996)
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Copyright (c) 2009. All rights reserved.
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Description