[r0, r0Screen] = PlaneR0(alpha,lambda,Geom,Atm)
Computes the plane wave coherence diameter (Fried parameter) given turbulence assumptions, propagation geometry, and wavelength. Also calculates screen r0 if input Atm is a discrete structure from AtmStruct. Returns NaN if propagation path intersects earth surface.
Parameters |
Description |
alpha [vector] |
Multiplier on turbulence model |
lambda [scalar] |
Wavelength of laser (m) |
Geom [struct/list] |
Geometry parameters. Can be a structure from GeomStruct or a comma separated list of (...,hp,ht,rd) - not required if Atm is a structure from AtmStruct. |
hp [scalar] |
Altitude of transmit/receive platform (m) |
ht [scalar] |
Altitude of target (m) |
rd [scalar] |
Downrange of target along spherical earth surface (m) |
Atm [struct/string] |
Atmospheric modeling parameters. Can be a structure from AtmStruct or a turbulence profile model to be used. |
Return Values |
Description |
r0 [vector] |
Plane wave coherence diameter (m) |
r0Screen [matrix] |
Plane wave coherence diameter at each phase screen. r0Screen is empty if Atm is not a discrete structure. |
>> [r0, r0Screen] = PlaneR0(1.0,1.0e-6,AtmStruct);
Copyright (c) 2009. All rights reserved.
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