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

Computes the plane 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] 
Plane 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 = PlaneRytov(1.0,1.0e-6,AtmStruct) 

  • Compute Rytov at 1 micron using the turbulence model in the input Atm struct.
>> Rytov = PlaneRytov(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 = PlaneRytov(1.0,1.0e-6,GeomStruct,{'HufnagelValley',15,1e-15}) 

  • Passing Atm as a turbulence profile model. To pass additional parameters to the model, pass the model name and parameters in a cell array
>> Rytov = PlaneRytov(1.0,1.0e-6,10,3000,10000,'HV57') 

  • Continous Atm model with geometry as a list

See Also
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