1   /* Copyright 2022-2025 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  /** Intermediate level interface for radio waves related to GNSS common frequency.
20   * @author Luc Maisonobe
21   * @since 12.1
22   *
23   */
24  public interface GnssSignal extends RadioWave {
25  
26      /** Common frequency F0 in Hz (10.23 MHz). */
27      double F0 = 10230000.0;
28  
29      /** Get the ratio f/f0, where {@link #F0 f0} is the common frequency.
30       * @return ratio f/f0, where {@link #F0 f0} is the common frequency
31       * @see #F0
32       * @see #getFrequency()
33       */
34      double getRatio();
35  
36      /** Get the RINEX name for the frequency.
37       * @return RINEX name for the frequency
38       */
39      String getName();
40  
41      /** Get the satellite system for which this frequency is defined.
42       * @return satellite system for which this frequency is defined
43       */
44      SatelliteSystem getSatelliteSystem();
45  
46  }