1   /* Copyright 2002-2022 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.files.ccsds.ndm.cdm;
18  
19  /** Screening volume frame possibilities used in CCSDS Conjunction Data Messages.
20   * @author Melina Vanel
21   * @since 11.2
22   */
23  public enum ScreenVolumeFrame {
24  
25      /** Radial Transverse Normal frame. */
26      RTN,
27  
28      /** Transverse Velocity Normal frame. */
29      TVN,
30  
31  }