QZSSScale.java

  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.time;

  18. /** QZSS time scale.
  19.  * <p>By convention, TQZSS = TAI - 19 s.</p>
  20.  * <p>The time scale is defined in <a
  21.  * href="http://qzss.go.jp/en/technical/download/pdf/ps-is-qzss/is-qzss-pnt-003.pdf?t=1549268771755">
  22.  * Quasi-Zenith Satellite System Navigation Service - Interface Specification for QZSS</a> version 1.6, 2014.
  23.  * </p>
  24.  * <p>This is intended to be accessed thanks to {@link TimeScales},
  25.  * so there is no public constructor.</p>
  26.  * @author Luc Maisonobe
  27.  * @see AbsoluteDate
  28.  */
  29. public class QZSSScale extends ConstantOffsetTimeScale {

  30.     /** Package private constructor for the factory.
  31.      */
  32.     QZSSScale() {
  33.         super("QZSS", new TimeOffset(-19L, 0L));
  34.     }

  35. }