1、BSI Standards PublicationBS ISO 17808:2014Space data and informationtransfer systems Telemetry(TM) channel coding profilesBS ISO 17808:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 17808:2014.The UK participation in its preparation was entrusted to Techn
2、icalCommittee ACE/68/-/7, Space systems and operations - Space dataand information transfer systems.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are respo
3、nsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 77418 8ICS 49.140Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Pol
4、icy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedBS ISO 17808:2014Reference numberISO 17808:2014(E)ISO 2014INTERNATIONAL STANDARD ISO17First edition2014-07-01Space data and information transfer coding profiles Systmes de transfert des donnes et informat
5、ions spatiales Profils de codage de canal pour tlmesure (TM) 808systems Telemetry (TM) channel BS ISO 17808:2014ISO 17808:2014(E) COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or
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7、211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2014 All rights reservedBS ISO 17808:2014ISO 17808:2014(E) iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national st
8、andards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International o
9、rganizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for
10、its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/
11、directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be i
12、n the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions
13、related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information ISO 17808 was prepared by the Consultative Committee for Space Data Systems (CCSDS) (as CCSDS 131.4
14、-M-1, July 2011) and was adopted (without modifications except those stated in Clause 2 of this International Standard) by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 13, Space data and information transfer systems. BS ISO 17808:2014BS ISO 17808:2014INTERNATIONAL STAN
15、DARD ISO 17808:2014(E) ISO 2014 All rights reserved 1Space data and information transfer systems Telemetry (TM) channel coding profiles 1 Scope This International Standard presents recommendations regarding the usage of coding schemes described in references 1-2 in the various mission profiles that
16、are encountered in space research, space operations, and Earth exploration. Within this document, it is assumed that at the sending end the Synchronization and Channel Coding sublayer accepts at a constant rate transfer frames of fixed length from the Data Link protocol sublayer; performs the encodi
17、ng and synchronization functions selected for the mission; and delivers a continuous and contiguous stream of channel symbols to the Physical layer. At the receiving end, the Synchronization and Channel Coding sublayer: accepts a continuous and contiguous stream of channel symbols from the Physical
18、layer; performs the synchronization and decoding functions selected for the mission; NOTE The decoding functions include validation of frames to determine their quality with respect to the possible presence of undetected errors. delivers transfer frames to the Data Link protocol sublayer. Profiles f
19、or Earth-to-space and Proximity links are out of scope and are not addressed in this document. Communication profiles for space-to-Earth links that are currently not supported by CCSDS, e.g. via data relay satellites, are not addressed in this document. 2 Requirements Requirements are the technical
20、recommendations made in the following publication (reproduced on the following pages), which is adopted as an International Standard: CCSDS 131.4-M-1, July 2011, TM Channel Coding Profiles For the purposes of international standardization, the modifications outlined below shall apply to the specific
21、 clauses and paragraphs of publication CCSDS 131.4-M-1. Pages i to vi This part is information which is relevant to the CCSDS publication only. Pages 1-2 Add the following information to the reference indicated: BS ISO 17808:2014ISO 17808:2014(E) 2 ISO 2014 All rights reserved1 Document CCSDS 131.0-
22、B-2, August 2011, is equivalent to ISO 22641:2012. 3 Revision of publication CCSDS 131.4-M-1 It has been agreed with the Consultative Committee for Space Data Systems that Subcommittee ISO/TC 20/SC 13 will be consulted in the event of any revision or amendment of publication CCSDS 131.4-M-1. To this
23、 end, NASA will act as a liaison body between CCSDS and ISO. BS ISO 17808:2014Recommendation for Space Data System Practices TM CHANNEL CODING PROFILES RECOMMENDED PRACTICE CCSDS 131.4-M-1 MAGENTA BOOK July 2011 BS ISO 17808:2014 ISO 17808:2014(E)BS ISO 17808:2014BS ISO 17808:2014CCSDS RECOMMENDED P
24、RACTICE CONCERNING TM CHANNEL CODING PROFILES AUTHORITY Issue: Recommended Practice, Issue 1 Date: July 2011 Location: Washington, DC, USA This document has been approved for publication by the Management Council of the Consultative Committee for Space Data Systems (CCSDS) and represents the consens
25、us technical agreement of the participating CCSDS Member Agencies. The procedure for review and authorization of CCSDS documents is detailed in the Procedures Manual for the Consultative Committee for Space Data Systems, and the record of Agency participation in the authorization of this document ca
26、n be obtained from the CCSDS Secretariat at the address below. This document is published and maintained by: CCSDS Secretariat Space Communications and Navigation Office, 7L70 Space Operations Mission Directorate NASA Headquarters Washington, DC 20546-0001, USA CCSDS 131.4-M-1 Page i July 2011 BS IS
27、O 17808:2014 ISO 17808:2014(E)BS ISO 17808:2014CCSDS RECOMMENDED PRACTICE CONCERNING TM CHANNEL CODING PROFILES STATEMENT OF INTENT The Consultative Committee for Space Data Systems (CCSDS) is an organization officially established by the management of its members. The Committee meets periodically t
28、o address data systems problems that are common to all participants, and to formulate sound technical solutions to these problems. Inasmuch as participation in the CCSDS is completely voluntary, the results of Committee actions are termed Recommendations and are not in themselves considered binding
29、on any Agency. CCSDS Recommendations take two forms: Recommended Standards that are prescriptive and are the formal vehicles by which CCSDS Agencies create the standards that specify how elements of their space mission support infrastructure shall operate and interoperate with others; and Recommende
30、d Practices that are more descriptive in nature and are intended to provide general guidance about how to approach a particular problem associated with space mission support. This Recommended Practice is issued by, and represents the consensus of, the CCSDS members. Endorsement of this Recommended P
31、ractice is entirely voluntary and does not imply a commitment by any Agency or organization to implement its recommendations in a prescriptive sense. No later than five years from its date of issuance, this Recommended Practice will be reviewed by the CCSDS to determine whether it should: (1) remain
32、 in effect without change; (2) be changed to reflect the impact of new technologies, new requirements, or new directions; or (3) be retired or canceled. In those instances when a new version of a Recommended Practice is issued, existing CCSDS-related member Practices and implementations are not nega
33、ted or deemed to be non-CCSDS compatible. It is the responsibility of each member to determine when such Practices or implementations are to be modified. Each member is, however, strongly encouraged to direct planning for its new Practices and implementations towards the later version of the Recomme
34、nded Practice. CCSDS 131.4-M-1 Page ii July 2011 BS ISO 17808:2014 ISO 17808:2014(E)BS ISO 17808:2014CCSDS RECOMMENDED PRACTICE CONCERNING TM CHANNEL CODING PROFILES FOREWORD Through the process of normal evolution, it is expected that expansion, deletion, or modification of this document may occur.
35、 This Recommended Practice is therefore subject to CCSDS document management and change control procedures, which are defined in the Procedures Manual for the Consultative Committee for Space Data Systems. Current versions of CCSDS documents are maintained at the CCSDS Web site: http:/www.ccsds.org/
36、 Questions relating to the contents or status of this document should be addressed to the CCSDS Secretariat at the address indicated on page i. CCSDS 131.4-M-1 Page iii July 2011 BS ISO 17808:2014 ISO 17808:2014(E)BS ISO 17808:2014CCSDS RECOMMENDED PRACTICE CONCERNING TM CHANNEL CODING PROFILES At t
37、ime of publication, the active Member and Observer Agencies of the CCSDS were: Member Agencies Agenzia Spaziale Italiana (ASI)/Italy. Canadian Space Agency (CSA)/Canada. Centre National dEtudes Spatiales (CNES)/France. China National Space Administration (CNSA)/Peoples Republic of China. Deutsches Z
38、entrum fr Luft- und Raumfahrt e.V. (DLR)/Germany. European Space Agency (ESA)/Europe. Instituto Nacional de Pesquisas Espaciais (INPE)/Brazil. Japan Aerospace Exploration Agency (JAXA)/Japan. National Aeronautics and Space Administration (NASA)/USA. Space Agency (FSA)/Russian Federation. UK Space Ag
39、ency/United Kingdom. Observer Agencies Austrian Space Agency (ASA)/Austria. Belgian Federal Science Policy Office (BFSPO)/Belgium. Central Research Institute of Machine Building (TsNIIMash)/Russian Federation. China Satellite Launch and Tracking Control General, Beijing Institute of Tracking and Tel
40、ecommunications Technology (CLTC/BITTT)/China. Chinese Academy of Sciences (CAS)/China. Chinese Academy of Space Technology (CAST)/China. Commonwealth Scientific and Industrial Research Organization (CSIRO)/Australia. CSIR Satellite Applications Centre (CSIR)/Republic of South Africa. Danish Nationa
41、l Space Center (DNSC)/Denmark. Departamento de Cincia e Tecnologia Aeroespacial (DCTA)/Brazil. European Organization for the Exploitation of Meteorological Satellites (EUMETSAT)/Europe. European Telecommunications Satellite Organization (EUTELSAT)/Europe. Geo-Informatics and Space Technology Develop
42、ment Agency (GISTDA)/Thailand. Hellenic National Space Committee (HNSC)/Greece. Indian Space Research Organization (ISRO)/India. Institute of Space Research (IKI)/Russian Federation. KFKI Research Institute for Particle performs the encoding and synchronization functions selected for the mission; an
43、d delivers a continuous and contiguous stream of channel symbols to the Physical layer. at the receiving end, the Synchronization and Channel Coding sublayer: accepts a continuous and contiguous stream of channel symbols from the Physical layer; performs the synchronization and decoding functions se
44、lected for the mission; NOTE The decoding functions include validation of frames to determine their quality with respect to the possible presence of undetected errors. delivers transfer frames to the Data Link protocol sublayer. Profiles for Earth-to-space and Proximity links are out of scope and ar
45、e not addressed in this document. Communication profiles for space-to-Earth links that are currently not supported by CCSDS, e.g., via data relay satellites, are not addressed in this document. 1.3 RATIONALE Over the years, CCSDS has standardized a set of schemes for forward error correction coding
46、based on state-of-the-art techniques. Indeed, since the needs of missions can be very different, a single type of code would not satisfy all the needs, and possible selections should be offered to the users. CCSDS 131.4-M-1 Page 1-1 July 2011 BS ISO 17808:2014 ISO 17808:2014(E)BS ISO 17808:2014CCSDS
47、 RECOMMENDED PRACTICE CONCERNING TM CHANNEL CODING PROFILES For instance, deep space missions generally operate at low data rates and have, in general, rather mild bandwidth constraints; on the other hand, link performances are crucial and high coding gain is required. Conversely, near-Earth mission
48、s, be they for space research, for space operations, or for Earth exploration, may operate at high or very high data rates on their telemetry link and require, in general, a compromise between coding gain and bandwidth expansion. Punctured convolutional codes were developed specifically for these pr
49、ofiles. Recently introduced LDPC codes appear as a possible alternative with better performances. Some mission profiles involve highly dynamic links. One of the cases is represented by Earth exploration satellites operating on low Earth orbits. The increasing amount of data to dump to Earth during the short contacts with ground stations requires ever increasing data throughput; techniques based on Variable Coding and Modulation (VCM) are a means to account for the dynami
