1   /* Copyright 2002-2025 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  package org.orekit.propagation.analytical.gnss.data;
18  
19  import org.hipparchus.CalculusFieldElement;
20  import org.hipparchus.Field;
21  import org.orekit.gnss.SatelliteSystem;
22  import org.orekit.time.TimeScales;
23  
24  /**
25   * Class for NavIC almanac.
26   *
27   * @see "Indian Regional Navigation Satellite System, Signal In Space ICD
28   *       for standard positioning service, version 1.1 - Table 28"
29   *
30   * @author Bryan Cazabonne
31   * @since 10.1
32   *
33   */
34  public class NavICAlmanac
35      extends AbstractAlmanac<NavICAlmanac> {
36  
37      /**
38       * Constructor.
39       * @param timeScales known time scales
40       * @param system     satellite system to consider for interpreting week number
41       *                   (may be different from real system, for example in Rinex nav, weeks
42       *                   are always according to GPS)
43       */
44      public NavICAlmanac(final TimeScales timeScales, final SatelliteSystem system) {
45          super(GNSSConstants.NAVIC_MU, GNSSConstants.NAVIC_AV, GNSSConstants.NAVIC_WEEK_NB, timeScales, system);
46      }
47  
48      /** Constructor from field instance.
49       * @param <T> type of the field elements
50       * @param original regular field instance
51       */
52      public <T extends CalculusFieldElement<T>> NavICAlmanac(final FieldNavICAlmanac<T> original) {
53          super(original);
54      }
55  
56      /** {@inheritDoc} */
57      @SuppressWarnings("unchecked")
58      @Override
59      public <T extends CalculusFieldElement<T>, F extends FieldGnssOrbitalElements<T, NavICAlmanac>>
60          F toField(final Field<T> field) {
61          return (F) new FieldNavICAlmanac<>(field, this);
62      }
63  
64      /**
65       * Setter for the Square Root of Semi-Major Axis (m^1/2).
66       * <p>
67       * In addition, this method set the value of the Semi-Major Axis.
68       * </p>
69       * @param sqrtA the Square Root of Semi-Major Axis (m^1/2)
70       */
71      public void setSqrtA(final double sqrtA) {
72          setSma(sqrtA * sqrtA);
73      }
74  
75  }