GeoEclps:

Path: SC/Environs

% Computes the normalized sun intensity for an earth geosynchronous orbit. 

   Since version 1.
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   Form:
   [n, eclipseType] = GeoEclps( alpha, beta, dEarth )
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   Inputs
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   alpha          (1,1)  Angle in the orbit plane between the sun and
                         the spacecraft ( 0 to 2 pi radians )
   beta           (1,1)  Angle between the sun vector and the orbit
                         plane ( ? -0.409 < beta < 0.409 radians for
                         zero inclination )
   dEarth         (1,1)  Distance to the earth. If not entered assumes 42167 km

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   Outputs
   -------
   n              (1,1)  Normalized sun intensity ( 0 ? n ? 1 )
   eclipseType    (1,1)  0 = none, 1 = partial, 2 = annular, 3 = total

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