1   /* Copyright 2002-2024 Thales Alenia Space
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.gnss;
18  
19  import org.orekit.utils.Constants;
20  
21  /** Top level interface for radio waves.
22   * @author Luc Maisonobe
23   * @since 12.1
24   *
25   */
26  public interface RadioWave {
27  
28      /** Get the value of the frequency in Hz.
29       * @return value of the frequency in Hz
30       * @see #getWavelength()
31       */
32      double getFrequency();
33  
34      /** Get the wavelength in meters.
35       * @return wavelength in meters
36       * @see #getFrequency()
37       */
38      default double getWavelength() {
39          return Constants.SPEED_OF_LIGHT / getFrequency();
40      }
41  
42  }