Path: SpacecraftEstimation/OrbitEstimation
% Computes the right-hand-side of the orbit equations for OrbitKalmanFilter.
Low-fidelity mode computes about a mass point, high-fidelity mode uses
nonlinear orbit equations, planetary perturbations and modeled forces.
Includes an onboard clock model.
--------------------------------------------------------------------------
Form:
xDot = FOrbKF( x, t, d )
--------------------------------------------------------------------------
------
Inputs
------
x (n,1) The state vector [r;v] or [r;v;b;f;...]
t Time
d (1,1) Data structure*
.highFidelity (1,1) High fidelity flag
.planetaryOn (1,1) Planetary accelerations flag
.forcesOn (1,1) Disturbance force modeling
.jD (1,1) Julian date
.nZonal (1,1) Number of zonal harmonics
.nTess (1,1) Number of tesseral harmonics
.gravityModel (1,1) Gravity model struct
.aExt (3,1) External acceleration, ex. thruster firings
* Can be left empty for low-fidelity mode
-------
Outputs
-------
xDot (n,1) The derivative of the state vector
--------------------------------------------------------------------------
AC: ACData/ACTConstants Orbit: GravityModels/LoadGEM Orbit: GravityModels/NormalizationMatrix Orbit: OrbitMechanics/AGravityC Orbit: OrbitMechanics/APlanet Orbit: OrbitMechanics/PlanetaryAccelerations SC: BasicOrbit/OrbRate SC: BasicOrbit/RV2A SC: Ephem/ECIToPlanet SC: Ephem/EOfE SC: Ephem/EarthNut SC: Ephem/EarthPre SC: Ephem/EarthRot SC: Ephem/GMSTime SC: Ephem/MSidDay SC: Ephem/MoonRot SC: Ephem/MoonV1 SC: Ephem/Moons SC: Ephem/NutDelta SC: Ephem/ObOfE SC: Ephem/SunV1 SC: Ephem/TruEarth SC: SCData/sCTConstants SC: SCMat/GEMT1 Common: CommonData/Constants Common: CommonData/SwooshWatermark Common: CommonData/xSplashSmall Common: Database/Constant Common: General/CellToMat Common: General/DeBlankLT Common: General/DeleteCell 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 Common: Time/T2JD Math: Linear/DupVect Math: Linear/Factorl Math: Linear/Mag Math: Linear/Unit Math: MathUtils/R2P5 Math: Trigonometry/CosD Math: Trigonometry/SinD
Back to the SpacecraftEstimation Module page