1   /* Copyright 2002-2020 CS Group
2    * Licensed to CS Group (CS) under one or more
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
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
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
15   * limitations under the License.
16   */
17  
18  package org.orekit.estimation.common;
19  
20  import org.hipparchus.util.FastMath;
21  import org.orekit.estimation.measurements.AngularAzEl;
22  import org.orekit.estimation.measurements.EstimatedMeasurement;
23  
24  /** Logger for elevation measurements.
25   * @author Luc Maisonobe
26   */
27  class ElevationLog extends MeasurementLog<AngularAzEl> {
28  
29      /** {@inheritDoc} */
30      @Override
31      double residual(final EstimatedMeasurement<AngularAzEl> evaluation) {
32          return FastMath.toDegrees(evaluation.getEstimatedValue()[1] - evaluation.getObservedMeasurement().getObservedValue()[1]);
33      }
34  
35  }