AtmJ70ToGround:

Path: SCPro/ProEnvirons

% Computes the atmospheric density using Jacchia's 1970 model or scale heights.
 Jacchia is only valid above 80 km, so this function switches to scale 
 heights at 80 km to give a smooth curve.

 Type AtmJ70ToGround for a demo.

 See also AtmJ70, AtmDens2, and SolarFluxPrediction.
 With one argument d.jD and d.rECI may be arrays.
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   Form:
   rho = AtmJ70ToGround( d );
   rho = AtmJ70ToGround( h, d )
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   ------
   Inputs
   ------
   h    (1,:) Altitude
   d    (:) Data structure
            .aP        (1,1)   Geomagnetic index 6.7 hours before the computation
            .dd        (1,1)   Day number since Jan 1., days
            .f         (1,1)   Daily 10.7 cm solar flux (e-22 watts/m^2/cycle/sec)
            .fHat      (1,1)   81-day mean of f (e-22 watts/m^2/cycle/sec)
            .fHat400   (1,1)   fHat 400 days before computation date
            .lat       (1,1)   Latitude of computation point + north (deg)
            .lng       (1,1)   Longitude of computation point + east (deg)
            .mm        (1,1)   Greenwich mean time from 0000 GMT, minutes
            .yr        (1,1)   Year
            .z         (1,1)   Geometric altitude (km)

   or
            .jD        (:) 	Julian date
            .rECI      (3,:)	ECI position vector
            .aP        (1,1)	Geomagnetic index 6.7 hours before the computation
            .f         (1,1)	Daily 10.7 cm solar flux (e-22 watts/m^2/cycle/sec)
            .fHat      (1,1) 	81-day mean of f (e-22 watts/m^2/cycle/sec)
            .fHat400   (1,1)	fHat 400 days before computation date

   -------
   Outputs
   -------
   rho  (1,:) Density (kg/m^3)

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Children:

AerospaceUtils: AtmosphericCalculations/AtmDens2
AerospaceUtils: AtmosphericCalculations/AtmJ70
SC: Environs/SolarFluxPrediction
Common: Graphics/Plot2D
Common: Time/Date2JD
Math: Linear/Mag

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