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EqualCn2Screens
[x,dx] = EqualCn2Screens([n],Atm,[Nscreens],[Geom])
Calculates path-normalized phase screen positions and thicknesses for equal strength phase screens. This function first calculates the plane wave coherence length, $r_0^{-5/3}$, and divides by Nscreens so that each segment will have the same strength. This function discretizes the calculation by breaking the path into n segments per meter and integrating $C_n^2$ to reach the desired strength per phase screen. If Atm.MaxAlt is not infinite, output screen positions are over the path where altitude is less than Atm.MaxAlt as assumed by AtmStruct.
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Parameters |
Description |
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n [scalar] |
(Optional) Number of screens for discretizing the calculation. Defaults to Nscreens and is increased as needed. |
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Atm [struct/string] |
Atmospheric modeling parameters. Can be a structure from AtmStruct or a turbulence profile model to be used. |
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Nscreens [scalar] |
(Optional) Number of phase screens to calculate. If Atm is a discrete structure from AtmStruct and Nscreens is not specified, Nscreens will be the number of screens in Atm. |
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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. |
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hp [scalar] |
Altitude of transmit/receive platform (m) |
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ht [scalar] |
Altitude of target (m) |
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rd [scalar] |
Downrange of target along spherical earth surface (m) |
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Return Values |
Description |
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x [vector] |
Path-normalized phase screen positions |
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dx [vector] |
Path-normalized phase screen thicknesses |
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Copyright (c) 2009. All rights reserved.
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Description