Class AbsolutePartialDerivativesEquations

  • All Implemented Interfaces:
    AdditionalDerivativesProvider, AdditionalEquations

    @Deprecated
    public class AbsolutePartialDerivativesEquations
    extends PartialDerivativesEquations
    Deprecated.
    as of 11.1, this class is not used anymore
    derivatives provider computing the partial derivatives of the state (orbit) with respect to initial state and force models parameters.

    This set of equations are automatically added to a numerical propagator in order to compute partial derivatives of the orbit along with the orbit itself. This is useful for example in orbit determination applications.

    The partial derivatives with respect to initial state can be either dimension 6 (orbit only) or 7 (orbit and mass).

    The partial derivatives with respect to force models parameters has a dimension equal to the number of selected parameters. Parameters selection is implemented at force models level. Users must retrieve a parameter driver using ForceModel.getParameterDriver(String) and then select it by calling setSelected(true).

    If several force models provide different drivers for the same parameter name, selecting any of these drivers has the side effect of selecting all the drivers for this shared parameter. In this case, the partial derivatives will be the sum of the partial derivatives contributed by the corresponding force models. This case typically arises for central attraction coefficient, which has an influence on Newtonian attraction, gravity field, and relativity.

    Since:
    10.2
    Author:
    Vincent Mouraux, Bryan Cazabonne