1   /* Copyright 2002-2025 CS GROUP
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3    * contributor license agreements.  See the NOTICE file distributed with
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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
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14   * See the License for the specific language governing permissions and
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17  package org.orekit.models.earth.troposphere;
18  
19  import org.hipparchus.util.FastMath;
20  import org.junit.jupiter.api.Test;
21  import org.orekit.bodies.GeodeticPoint;
22  import org.orekit.time.AbsoluteDate;
23  import org.orekit.time.TimeScalesFactory;
24  import org.orekit.utils.TrackingCoordinates;
25  
26  public class GlobalMappingFunctionModelTest extends AbstractMappingFunctionTest<GlobalMappingFunctionModel> {
27  
28      protected GlobalMappingFunctionModel buildMappingFunction() {
29          return new GlobalMappingFunctionModel();
30      }
31  
32      @Test
33      public void testMappingFactors() {
34          // Site (NRAO, Green Bank, WV): latitude:  0.6708665767 radians
35          //                              longitude: -1.393397187 radians
36          //                              height:    844.715 m
37          //
38          // Date: MJD 55055 -> 12 August 2009 at 12h UT
39          //
40          // Ref:    Petit, G. and Luzum, B. (eds.), IERS Conventions (2010),
41          //         IERS Technical Note No. 36, BKG (2010)
42          //
43          // Expected mapping factors : hydrostatic -> 3.425246 (Ref)
44          //                                    wet -> 3.449589 (Ref)
45          doTestMappingFactors(AbsoluteDate.createMJDDate(55055, 43200, TimeScalesFactory.getUTC()),
46                               new GeodeticPoint(0.6708665767, -1.393397187, 844.715),
47                               new TrackingCoordinates(0.0, 0.5 * FastMath.PI - 1.278564131, 0.0),
48                               3.425246, 3.449589);
49      }
50  
51      @Test
52      @Override
53      public void testDerivatives() {
54          doTestDerivatives(1.0e-100, 5.0e-19, 1.0e-100, 3.0e-8, 1.0e-100);
55      }
56  
57  }