1   /* Copyright 2002-2025 CS GROUP
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3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
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9    *   http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
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16   */
17  package org.orekit.estimation.leastsquares;
18  
19  import java.util.List;
20  
21  import org.orekit.estimation.measurements.ObservedMeasurement;
22  import org.orekit.orbits.Orbit;
23  import org.orekit.propagation.MatricesHarvester;
24  import org.orekit.propagation.Propagator;
25  import org.orekit.propagation.conversion.PropagatorBuilder;
26  import org.orekit.utils.ParameterDriversList;
27  
28  /** Bridge between {@link ObservedMeasurement measurements} and {@link
29   * org.hipparchus.optim.nonlinear.vector.leastsquares.LeastSquaresProblem
30   * least squares problems}.
31   * @author Luc Maisonobe
32   * @since 8.0
33   */
34  public class BatchLSModel extends AbstractBatchLSModel {
35  
36      /** Name of the State Transition Matrix state. */
37      private static final String STM_NAME = BatchLSModel.class.getName() + "-derivatives";
38  
39      /** Simple constructor.
40       * @param propagatorBuilders builders to use for propagation
41       * @param measurements measurements
42       * @param estimatedMeasurementsParameters estimated measurements parameters
43       * @param observer observer to be notified at model calls
44       */
45      public BatchLSModel(final PropagatorBuilder[] propagatorBuilders,
46                          final List<ObservedMeasurement<?>> measurements,
47                          final ParameterDriversList estimatedMeasurementsParameters,
48                          final ModelObserver observer) {
49          // call super constructor
50          super(propagatorBuilders, measurements, estimatedMeasurementsParameters, observer);
51      }
52  
53      /** {@inheritDoc} */
54      @Override
55      protected MatricesHarvester configureHarvester(final Propagator propagator) {
56          return propagator.setupMatricesComputation(STM_NAME, null, null);
57      }
58  
59      /** {@inheritDoc} */
60      @Override
61      protected Orbit configureOrbits(final MatricesHarvester harvester, final Propagator propagator) {
62          // Directly return the propagator's initial state
63          return propagator.getInitialState().getOrbit();
64      }
65  
66  }