SphericalRytov

MATLAB

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

Description

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

Parameters

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

Return Values	Description
Rytov [vector]	Spherical wave rytov number

References

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.

Examples

Rytov = SphericalRytov(alpha,lambda,AtmStruct)
Rytov = SphericalRytov(alpha,lambda,GeomStruct,AtmStruct)
- Geom and Atm must have same values for hp, ht, and rd.
Rytov = SphericalRytov(alpha,lambda,GeomStruct,Cn2Model)
Rytov = SphericalRytov(alpha,lambda,hp,ht,rd,Cn2Model)