AbstractCovarianceMatrixProvider.java

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package org.orekit.estimation.sequential;

import org.hipparchus.linear.RealMatrix;
import org.orekit.propagation.SpacecraftState;

/** Abstract provider handling a predefined initial covariance matrix.
 * <p>
 * This class always provides a predefined initial noise matrix.
 * </p>
 * @author Luc Maisonobe
 * @since 9.2
 */
public abstract class AbstractCovarianceMatrixProvider implements CovarianceMatrixProvider {

    /** Initial process noise. */
    private final RealMatrix initialNoiseMatrix;

    /** Simple constructor.
     * @param initialNoiseMatrix initial process noise
     */
    protected AbstractCovarianceMatrixProvider(final RealMatrix initialNoiseMatrix) {
        this.initialNoiseMatrix = initialNoiseMatrix;
    }

    /** {@inheritDoc} */
    @Override
    public RealMatrix getInitialCovarianceMatrix(final SpacecraftState initial) {
        return initialNoiseMatrix;
    }

}