Path: Orbit/OrbitControl

% Compute control acceleration for low thrust orbit raising
 The control has four discrete modes:

   mode 0 is semi-major axis raising.
   mode 1 is ascending node.
   mode 2 is inclination. 
   mode 3 is zero acceleration.

 The mode sequence is suitable if your semi-major axis is increasing and
 inclination is increasing. The angular width is the allowable control region
 around the optimal true anomaly, which is pi/2 and 3*pi/2 for longitude of the
 ascending node and 0 and pi for inclination.
   [a,mode,el] = LowThrustControl( x, mode, elTarget, aMag, tol, angWidth )

   x         (6,1) [r;v]
   mode      (1,1) Mode index, 0, 1, 2, or 3
   elTarget  (1,6) Elements target [a i W w e M]
   aMag      (1,1) Acceleration magnitude
   tol       (1,1) Maneuver tolerance
   angWidth  (1,1) Width of angles for maneuvers (rad)

   a         (3,1) Acceleration vector
   mode      (1,1) Mode index
   el        (1,6) Current elements computed from x



SC: BasicOrbit/E2M
SC: BasicOrbit/Nu2E
SC: BasicOrbit/Nu2M
SC: BasicOrbit/RV2El
Common: CommonData/SwooshWatermark
Common: General/CellToMat
Common: General/MatToCell
Common: General/Watermark
Common: Graphics/NewFig
Common: Graphics/Plot2D
Common: Graphics/PltStyle
Math: Linear/Cross
Math: Linear/DupVect
Math: Linear/Mag
Math: Linear/Unit

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