Package org.orekit.propagation.numerical.cr3bp

Class STMEquations

java.lang.Object
org.orekit.propagation.numerical.cr3bp.STMEquations
All Implemented Interfaces:
AdditionalDerivativesProvider
public class STMEquations extends Object implements AdditionalDerivativesProvider
Class calculating the state transition matrix coefficient for CR3BP Computation.
Since:
10.2
Author:
Vincent Mouraux
See Also:
  • "Dynamical systems, the three-body problem, and space mission design, Koon, Lo, Marsden, Ross"

  • Constructor Details

    • STMEquations

      public STMEquations(CR3BPSystem syst)
      Simple constructor.
      Parameters:
      syst - CR3BP System considered

  • Method Details

    • setInitialPhi

      public SpacecraftState setInitialPhi(SpacecraftState s)
      Method adding the standard initial values of the additional state to the initial spacecraft state.
      Parameters:
      s - Initial state of the system
      Returns:
      s Initial augmented (with the additional equations) state

    • combinedDerivatives

      public CombinedDerivatives combinedDerivatives(SpacecraftState s)
      Compute the derivatives related to the additional state (and optionally main state increments).
      Specified by:
      combinedDerivatives in interface AdditionalDerivativesProvider
      Parameters:
      s - current state information: date, kinematics, attitude, and additional states this equations depend on (according to the yields method)
      Returns:
      computed combined derivatives, which may include some incremental coupling effect to add to main state derivatives

    • getName

      public String getName()
      Get the name of the additional derivatives (which will become state once integrated).
      Specified by:
      getName in interface AdditionalDerivativesProvider
      Returns:
      name of the additional state (names containing "orekit" with any case are reserved for the library internal use)

    • getDimension

      public int getDimension()
      Get the dimension of the generated derivative.
      Specified by:
      getDimension in interface AdditionalDerivativesProvider
      Returns:
      dimension of the generated

    • getStateTransitionMatrix

      public RealMatrix getStateTransitionMatrix(SpacecraftState s)
      Method returning the State Transition Matrix.
      Parameters:
      s - SpacecraftState of the system
      Returns:
      phiM State Transition Matrix