Rytov = SphericalRytov(alpha,lambda,Geom,Atm)

Computes the spherical wave Rytov number given turbulence assumptions, propagation geometry, and wavelength. Returns NaN if propagation path intersects earth surface.

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
Return Values 
Rytov [vector] 
Spherical wave rytov number 

  • Clifford, S. F. "The Classical Theory of Wave Propagation in a Turbulent Medium." Laser Beam Propagation in the Atmosphere. J. W. Strohbehn, Ed. Springer-Verlag, 1978.


>> Rytov = SphericalRytov(1.0,1.0e-6,AtmStruct) 

  • Compute Rytov at 1 micron using the turbulence model in the input Atm struct.
>> Rytov = SphericalRytov(2.0,1.0e-6,GeomStruct,AtmStruct) 

  • Compute Rytov scaling the input turbulence model by a factor of 2 in addition to any turbulence multiplier already in the Atm struct. If Geom and geometry in Atm are not consistent, Atm will be updated.
>> Rytov = SphericalRytov(2.0,1.0e-6,GeomStruct, ... 


  • Compute Rytov scaling the input turbulence model by a factor of two. To pass additional parameters to the model, pass the model name and parameters in a cell array.
>> Rytov = SphericalRytov(1.0,1.0e-6,10,3000,10000,'HV57') 

  • Compute Rytov passing geometry as a list with a continuous turbulence model.

See Also
Made with Doc-O-Matic.
Copyright (c) 2009. All rights reserved.
What do you think about this topic? Send feedback!