Strehl = AnisoplanaticStrehl(alpha,lambda,D,d,Atm)
Calculates the Strehl ratio due to the effect of angular anisoplanatism given turbulence multiplier, Tx/Rx aperture diameter, anisoplanatic beam path displacement, and atmospheric modeling data. Beam displacement vector should be obtained via PathDisp to include appropriate anisoplanatic effects (angular, aperture, chromatic, etc.)
Parameters |
Description |
alpha [scalar] |
Turbulence strength multiplier |
lambda [scalar] |
Wavelength of laser (m) |
D [scalar] |
Aperture diameter (m) |
d [matrix] |
Displacement of beam paths along propagation path (m). Resolved for the P axis and T axis, as calculated from PathDisp. Column 1 is displacement in P axis, col 2 is displacement in T axis, i.e., d=[d_P,d_T] |
Atm [struct/list] |
Atmospheric modeling parameters. Can be a discrete structure from AtmStruct or a comma separated list of (...x,Cn2,L) |
x [vector] |
Path-normalized screen locations along the propagation path. |
Cn2 [vector] |
Values of the refractive index structure coefficient along the path (${m}^{-2/3}$) |
L [scalar] |
Slant range (m) |
Return Values |
Description |
Strehl [scalar] |
Anisoplanatic Strehl |
>> G = GeomStruct;
>> Atm = AtmStruct;
>> d = PathDisp(G,Atm,'ANGULAR',1e-6,0);
>> Strehl = AnisoplanaticStrehl(1,1.315e-6,1.5,d,Atm)
Copyright (c) 2009. All rights reserved.
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