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.gnss.metric.messages.common;
18
19 /** Enumerate for GLONASS User Range Accuracy.
20 * @see "ICD L1, L2 GLONASS, Edition 5.1, Table 4.4, 2008"
21 * @author Bryan Cazabonne
22 */
23 public class GlonassUserRangeAccuracy implements AccuracyProvider {
24
25 /** User Range Accuracy indicator (word F<sub>T</sub>). */
26 private final int glonassUraIndex;
27
28 /**
29 * Simple constructor.
30 * @param index integer value of the Glonass user range accuracy
31 */
32 public GlonassUserRangeAccuracy(final int index) {
33 this.glonassUraIndex = index;
34 }
35
36 /** {@inheritDoc} */
37 @Override
38 public double getAccuracy() {
39 switch (glonassUraIndex) {
40 case 0 : return 1.0;
41 case 1 : return 2.0;
42 case 2 : return 2.5;
43 case 3 : return 4.0;
44 case 4 : return 5.0;
45 case 5 : return 7.0;
46 case 6 : return 10.0;
47 case 7 : return 12.0;
48 case 8 : return 14.0;
49 case 9 : return 16.0;
50 case 10 : return 32.0;
51 case 11 : return 64.0;
52 case 12 : return 128.0;
53 case 13 : return 256.0;
54 case 14 : return 512.0;
55 default : return 1024.0; // Data shall not be used
56 }
57 }
58
59 }