TylerFreq

MATLAB

fT = TylerFreq(alpha,lambda,D,S,Atm)

Description

Computes the Tyler frequency for propagation given turbulence assumptions, engagement parameters, 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)
D [scalar]	Aperture diameter (m)
S [Struct/List]	Engagement parameters. Must be a structure from EngagementStruct or GeomStruct.
Atm [struct]	Atmospheric modeling parameter structure from AtmStruct. Atm must have wind profile/heading if calculation with wind is desired.

Return Values

Return Values	Description
fT [vector]	Tyler frequency for target motion only (Hz)

References

Tyler, G. A. "Bandwidth Considerations for Tracking Through Turbulence." J. Opt. Soc. Am. A 11, 358-367 (1994).

Examples

>> fT = TylerFreq(2.0,1.0e-6,1.0,GeomStruct,AtmStruct)

Compute fT 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.