Package org.orekit.estimation.sequential

Class AbstractKalmanEstimator

java.lang.Object
org.orekit.estimation.sequential.AbstractKalmanEstimator
All Implemented Interfaces:
ParameterEstimator
Direct Known Subclasses:
KalmanEstimator, SemiAnalyticalKalmanEstimator, SemiAnalyticalUnscentedKalmanEstimator, UnscentedKalmanEstimator
public abstract class AbstractKalmanEstimator extends Object implements ParameterEstimator
Base class for Kalman estimators.
Since:
11.3
Author:
Romain Gerbaud, Maxime Journot, Luc Maisonobe

  • Constructor Details

    • AbstractKalmanEstimator

      protected AbstractKalmanEstimator(MatrixDecomposer decomposer, List<? extends PropagatorBuilder> builders)
      Constructor.
      Parameters:
      decomposer - matrix decomposer for filter
      builders - list of propagator builders

  • Method Details

    • getCurrentMeasurementNumber

      public int getCurrentMeasurementNumber()
      Get the current measurement number.
      Returns:
      current measurement number

    • getCurrentDate

      public AbsoluteDate getCurrentDate()
      Get the current date.
      Returns:
      current date

    • setObserver

      public void setObserver(KalmanObserver observer)
      Set the observer.
      Parameters:
      observer - the observer

    • getObserver

      public KalmanObserver getObserver()
      Get the observer.
      Returns:
      the observer

    • getPhysicalEstimatedState

      public RealVector getPhysicalEstimatedState()
      Get the "physical" estimated state (i.e. not normalized)

      For the Semi-analytical Kalman Filters it corresponds to the corrected filter correction. In other words, it doesn't represent an orbital state.

      Returns:
      the "physical" estimated state

    • getPhysicalEstimatedCovarianceMatrix

      public RealMatrix getPhysicalEstimatedCovarianceMatrix()
      Get the "physical" estimated covariance matrix (i.e. not normalized)
      Returns:
      the "physical" estimated covariance matrix

    • getEstimatedMeasurementsParameters

      public ParameterDriversList getEstimatedMeasurementsParameters()
      Get the list of estimated measurements parameters.
      Returns:
      the list of estimated measurements parameters

    • getBuilders

      protected List<? extends PropagatorBuilder> getBuilders()
      Get the list of propagator builders.
      Returns:
      the list of propagator builders

    • getPropagatorBuilders

      public PropagatorBuilder[] getPropagatorBuilders()
      Description copied from interface: ParameterEstimator
      Getter for the propagator builders.
      Specified by:
      getPropagatorBuilders in interface ParameterEstimator
      Returns:
      builders

    • getKalmanEstimation

      protected abstract KalmanEstimation getKalmanEstimation()
      Get the provider for kalman filter estimations.
      Returns:
      the provider for Kalman filter estimations

    • getMatrixDecomposer

      protected MatrixDecomposer getMatrixDecomposer()
      Get the matrix decomposer.
      Returns:
      the decomposer

    • getReferenceDate

      protected AbsoluteDate getReferenceDate()
      Get the reference date.
      Returns:
      the date

    • getKalmanFilter

      protected abstract KalmanFilter<MeasurementDecorator> getKalmanFilter()
      Get the Hipparchus filter.
      Returns:
      the filter

    • getScale

      protected abstract double[] getScale()
      Get the parameter scaling factors.
      Returns:
      the parameters scale