ISO INTERNATIONAL STANDARD 21459 Secondedition 2015-08-15 Space data and information transfer systems Proximity-1 space link protocol - Coding and synchronization sublayer Systemes de transfert des informations et données spatiales - Protocole pour liaisons spatiales de proximité 1 - Sous-couche de codage et synchronisation Reference number IS0 21459:2015(E) ISO International Organization for Standardization =Zhejiang Institute of Standardization 5956617 @IS02015 mitted without license from IHS IS0 21459:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org HS und Not for Resale, 2015/11/11 06:50:22 networking permited without license from IHS ISO 21459:2015(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies established has the right to be represented on that committee. International organizations, 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. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. rights. isO shall not be held responsible for identifying any or all such patent rights. ISO 21459 was prepared by the Consultative Committee for Space Data Systems (CCSDS) (as CCSDS 211.2-B-2, December 2013) and was adopted (without modifications except those stated in clause 2 of this International Standard) by Technical Committee ISO/TC 2o, Aircraft and space vehicles, Subcommittee Sc 13, Space data and information transfer systems. This second edition of iS0 21459:2015 cancels and replaces the first edition (is0 21459:2006), which has been technically revised. ii