Class FieldCartesianAdjointDerivativesProvider<T extends CalculusFieldElement<T>>
- java.lang.Object
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- org.orekit.control.indirect.adjoint.AbstractCartesianAdjointDerivativesProvider
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- org.orekit.control.indirect.adjoint.FieldCartesianAdjointDerivativesProvider<T>
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- All Implemented Interfaces:
FieldAdditionalDerivativesProvider<T>
public class FieldCartesianAdjointDerivativesProvider<T extends CalculusFieldElement<T>> extends AbstractCartesianAdjointDerivativesProvider implements FieldAdditionalDerivativesProvider<T>
Class defining the Field version of the adjoint dynamics for Cartesian coordinates, as defined in the Pontryagin Maximum Principle.- Since:
- 12.2
- Author:
- Romain Serra
- See Also:
FieldAdditionalDerivativesProvider
,FieldNumericalPropagator
,CartesianAdjointDerivativesProvider
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Constructor Summary
Constructors Constructor Description FieldCartesianAdjointDerivativesProvider(CartesianCost cost, CartesianAdjointEquationTerm... adjointEquationTerms)
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description FieldCombinedDerivatives<T>
combinedDerivatives(FieldSpacecraftState<T> state)
Compute the derivatives related to the additional state (and optionally main state increments).T
evaluateHamiltonian(FieldSpacecraftState<T> state)
Evaluate the Hamiltonian from Pontryagin's Maximum Principle.void
init(FieldSpacecraftState<T> initialState, FieldAbsoluteDate<T> target)
Initialize the generator at the start of propagation.-
Methods inherited from class org.orekit.control.indirect.adjoint.AbstractCartesianAdjointDerivativesProvider
getCost, getDimension, getName
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.orekit.propagation.integration.FieldAdditionalDerivativesProvider
getDimension, getName, yields
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Constructor Detail
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FieldCartesianAdjointDerivativesProvider
public FieldCartesianAdjointDerivativesProvider(CartesianCost cost, CartesianAdjointEquationTerm... adjointEquationTerms)
Constructor.- Parameters:
cost
- cost functionadjointEquationTerms
- terms contributing to the adjoint equations
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Method Detail
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init
public void init(FieldSpacecraftState<T> initialState, FieldAbsoluteDate<T> target)
Initialize the generator at the start of propagation.- Specified by:
init
in interfaceFieldAdditionalDerivativesProvider<T extends CalculusFieldElement<T>>
- Parameters:
initialState
- initial state information at the start of propagationtarget
- date of propagation
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combinedDerivatives
public FieldCombinedDerivatives<T> combinedDerivatives(FieldSpacecraftState<T> state)
Compute the derivatives related to the additional state (and optionally main state increments).- Specified by:
combinedDerivatives
in interfaceFieldAdditionalDerivativesProvider<T extends CalculusFieldElement<T>>
- Parameters:
state
- current state information: date, kinematics, attitude, and additional states this equations depend on (according to theyields
method)- Returns:
- computed combined derivatives, which may include some incremental coupling effect to add to main state derivatives
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evaluateHamiltonian
public T evaluateHamiltonian(FieldSpacecraftState<T> state)
Evaluate the Hamiltonian from Pontryagin's Maximum Principle.- Parameters:
state
- state assumed to hold the adjoint variables- Returns:
- Hamiltonian
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