[thetaCovX,thetaCovY,tvar] = TiltAngCovScale(lambda,D,G,... Atm,[DispCov])
Computes the covariance scale lengths for modeling Kolmogorov angular tilt anisoplanatism as a Markov random process in 2 dimensions. Returns angular scale lengths and tilt variance quantities for modeling tilt angular covariance as: $C_{X}(a,0) = tvar*exp(-a/thetaCovX)$ and $C_{Y}(a,0) = tvar*exp(-a/thetaCovY)$
Parameters |
Description |
lambda [scalar] |
Wavelength for propagation (m) |
D [scalar] |
Diameter of receive/transmit aperture (m) |
G [struct] |
Geometry structure from GeomStruct |
Atm [struct] |
Atmospheric modeling structure from AtmStruct |
DispCov [scalar] |
(Optional) Flag (1/0) for covariance and fit plot |
Return Values |
Description |
thetaCovX [scalar] |
Covariance scale for X-tilt with X ang offset (rad) |
thetaCovY [scalar] |
Covariance scale for Y-tilt with X ang offset (rad) |
tvar [scalar] |
Variance of tilt fluctuations (rad^2) |
>> [thetaCovX,thetaCovY,tvar] = TiltAngCovScale(1e-6,1.0, ...
GeomStruct,AtmStruct)
Copyright (c) 2009. All rights reserved.
|
What do you think about this topic? Send feedback!
|