Goals2DeltaElem:

Path: FormationFlying/Transformation

% Computes the desired orbital element differences, given the formation flying 
   "goals" and the measured orbital elements.

   Since version 7.
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   Form:
   dEl = Goals2DeltaElem( el0, goals, J2 );
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   ------
   Inputs
   ------
   el0             (1,6)     Measured orbital elements (Alfriend format) [a,theta,i,q1,q2,W]
   goals            (.)      Geometric goals data structure with following fields:
     - y0          (1,:)        along-track offset                             [km]
     - aE          (1,:)        semi-major axis of relative ellipse            [km]
     - beta0       (1,:)        angle on ellipse at perigee                   [rad]
     - zInc        (1,:)        cross-track amplitude due to inclination diff  [km]
     - zLan        (1,:)        cross-track amplitude due to right ascen diff  [km]
   J2               (1)      Size of the J2 perturbation (default 0)

   -------
   Outputs
   -------
   dEl   (:,6)     desired orbital element differences

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Children:

FormationFlying: Coord/CirclePhase
FormationFlying: Transformation/DeltaElem2Hills
FormationFlying: Transformation/Goals2Hills
FormationFlying: Transformation/Hills2DeltaElem
SC: BasicOrbit/OrbRate
Common: CommonData/SwooshWatermark
Common: General/CellToMat
Common: General/MatToCell
Common: General/Watermark
Common: Graphics/NewFig
Common: Graphics/Plot2D
Common: Graphics/PltStyle
Math: Trigonometry/WrapPhase

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