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.parser;
18
19 import org.orekit.propagation.analytical.gnss.data.GNSSConstants;
20 import org.orekit.utils.units.Unit;
21
22 /**
23 * Units used in RTCM and IGS SSR messages.
24 *
25 * @author Bryan Cazabonne
26 * @since 11.0
27 */
28 public class Units {
29
30 /** Semi-circles units. */
31 public static final Unit SEMI_CIRCLE = Unit.RADIAN.scale("sc", GNSSConstants.GNSS_PI);
32
33 /** Nanoseconds units. */
34 public static final Unit NS = Unit.parse("ns");
35
36 /** Millimetres units. */
37 public static final Unit MM = Unit.parse("mm");
38
39 /** Millimetres per second units. */
40 public static final Unit MM_PER_S = Unit.parse("mm/s");
41
42 /** Millimetres per square second units. */
43 public static final Unit MM_PER_S2 = Unit.parse("mm/s²");
44
45 /** Kilometers par second units. */
46 public static final Unit KM_PER_S = Unit.parse("km/s");
47
48 /** Kilometers par square second units. */
49 public static final Unit KM_PER_S2 = Unit.parse("km/s²");
50
51 /** Private constructor for a utility class. */
52 private Units() {
53 // Nothing to do
54 }
55
56 }