Package org.orekit.propagation.integration

Class FieldStateMapper<T extends CalculusFieldElement<T>>

java.lang.Object
org.orekit.propagation.integration.FieldStateMapper<T>
Type Parameters:
T - type of the field elements
public abstract class FieldStateMapper<T extends CalculusFieldElement<T>> extends Object
This class maps between raw double elements and FieldSpacecraftState instances.
Author:
Luc Maisonobe

  • Constructor Details

    • FieldStateMapper

      protected FieldStateMapper(FieldAbsoluteDate<T> referenceDate, T mu, OrbitType orbitType, PositionAngleType positionAngleType, AttitudeProvider attitudeProvider, Frame frame)
      Simple constructor.

      The position parameter type is meaningful only if propagation orbit type support it. As an example, it is not meaningful for propagation in Cartesian parameters.

      Parameters:
      referenceDate - reference date
      mu - central attraction coefficient (m³/s²)
      orbitType - orbit type to use for mapping
      positionAngleType - angle type to use for propagation
      attitudeProvider - attitude provider
      frame - inertial frame

  • Method Details

    • getReferenceDate

      public FieldAbsoluteDate<T> getReferenceDate()
      Get reference date.
      Returns:
      reference date

    • getOrbitType

      public OrbitType getOrbitType()
      Get propagation parameter type.
      Returns:
      orbit type used for propagation

    • setPositionAngleType

      public void setPositionAngleType()
      Set position angle type.

    • getPositionAngleType

      public PositionAngleType getPositionAngleType()
      Get propagation parameter type.
      Returns:
      angle type to use for propagation

    • getMu

      public T getMu()
      Get the central attraction coefficient μ.
      Returns:
      mu central attraction coefficient (m³/s²)

    • getFrame

      public Frame getFrame()
      Get the inertial frame.
      Returns:
      inertial frame

    • getAttitudeProvider

      public AttitudeProvider getAttitudeProvider()
      Get the attitude provider.
      Returns:
      attitude provider

    • setAttitudeProvider

      public void setAttitudeProvider(AttitudeProvider attitudeProvider)
      Setter for the attitude provider.
      Parameters:
      attitudeProvider - new attitude provider

    • mapDoubleToDate

      public FieldAbsoluteDate<T> mapDoubleToDate(T t)
      Map the raw double time offset to a date.
      Parameters:
      t - date offset
      Returns:
      date

    • mapDoubleToDate

      public FieldAbsoluteDate<T> mapDoubleToDate(T t, FieldAbsoluteDate<T> date)
      Map the raw double time offset to a date.
      Parameters:
      t - date offset
      date - The expected date.
      Returns:
      date if it is the same time as t to within the lower precision of the latter. Otherwise a new date is returned that corresponds to time t.

    • mapDateToDouble

      public T mapDateToDouble(FieldAbsoluteDate<T> date)
      Map a date to a raw double time offset.
      Parameters:
      date - date
      Returns:
      time offset

    • mapArrayToState

      public FieldSpacecraftState<T> mapArrayToState(T t, T[] y, T[] yDot, PropagationType type)
      Map the raw double components to a spacecraft state.
      Parameters:
      t - date offset
      y - state components
      yDot - state derivative components
      type - type of the elements used to build the state (mean or osculating)
      Returns:
      spacecraft state

    • mapArrayToState

      public abstract FieldSpacecraftState<T> mapArrayToState(FieldAbsoluteDate<T> date, T[] y, T[] yDot, PropagationType type)
      Map the raw double components to a spacecraft state.
      Parameters:
      date - of the state components
      y - state components
      yDot - state derivative components
      type - type of the elements used to build the state (mean or osculating).
      Returns:
      spacecraft state

    • mapStateToArray

      public abstract void mapStateToArray(FieldSpacecraftState<T> state, T[] y, T[] yDot)
      Map a spacecraft state to raw double components.
      Parameters:
      state - state to map
      y - placeholder where to put the components
      yDot - placeholder where to put the components derivatives