Path: Orbit/RHSOrbit
% Computes the right hand side for a gravity model.
Allows for any spherical harmonic model to be passed in as a data structure.
Uses the highest fidelity Earth ephemeris function.
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Form:
xDot = RHSGeoHarm( x, t, d )
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Inputs
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x (6,1) Position vector [rECI (km); vECI (km)];
t (1,1) Time since start Julian Date (s)
d (.) Gravity model data structure
.nN (1,1) Highest zonal harmonic (m = 0)
.nM (1,1) Highest sectorial and tesseral harmonic
.s (:,:) S terms
.c (:,:) C terms
.j (1,:) m = 0 terms
.mu (1,1) Spherical gravitational potential
.a (1,1) Planet radius
.jD0 (1,1) Start Julian Date
.isNormalized (1) Coefficient are normalized, or not
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Outputs
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xDot (6,1) [rDot;vDot]
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See also: TruEarth, AGravityC
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Orbit: GravityModels/LoadGEM Orbit: GravityModels/NormalizationMatrix Orbit: OrbitMechanics/AGravityC SC: Ephem/EOfE SC: Ephem/EarthNut SC: Ephem/EarthPre SC: Ephem/EarthRot SC: Ephem/GMSTime SC: Ephem/MSidDay SC: Ephem/NutDelta SC: Ephem/ObOfE SC: Ephem/TruEarth SC: SCMat/GEMT1 Common: CommonData/SwooshWatermark Common: General/CellToMat Common: General/DeBlankLT Common: General/DispWithTitle Common: General/MatToCell Common: General/Watermark Common: Graphics/Mesh2 Common: Graphics/NewFig Common: Graphics/Plot2D Common: Graphics/PltStyle Common: Graphics/XLabelS Common: Graphics/YLabelS Common: Graphics/ZLabelS Common: Time/DTSToDTA Common: Time/Date2JD Common: Time/JD2000 Common: Time/JD2T Common: Time/JDToMidnight Math: Linear/DupVect Math: Linear/Factorl Math: MathUtils/R2P5 Math: Trigonometry/CosD Math: Trigonometry/SinD
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