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1、BRITISH STANDARD AEROSPACE SERIES BS Z 15:1998 ISO 12172: 1998 Space data and information transfer systems Telecommand Data routing service ICS 49.140 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS Z 15:199
2、8 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 December 1998 BSI 06-1999 ISBN 0 580 30891 X National foreword This British Standard reproduces verbatim ISO
3、 12172:1998 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee ACE/67, Data and information transfer standards for civil space applications, which has the responsibility to: aid enquirers to understand the text; present to the
4、responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained
5、on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facili
6、ty of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligati
7、ons. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the ISO title page, pages ii and iv, pages 1 to 43 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendme
8、nt table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS Z 15:1998 BSI 06-1999i Contents Page National forewordInside front
9、 cover Forewordiii Text of ISO 121721 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Unco
10、ntrolled Copy, (c) BSI Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS Z 15:1998 ii BSI 06-1999 Contents Page Foreword iii 1Scope 1 2Requirements 1 3Revision of publication CCSDS 202.0-B-2 1 Licensed Copy: L
11、ondon South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS Z 15:1998 BSI 06-1999iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work
12、 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 organizations, governmental and non-governmen
13、tal, 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. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting
14、. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 12172 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 13, Space data and information transfer systems. Descriptors
15、: Navigation systems, space craft, space data systems, data processing, information interchange, telecommunications, telecommand, data transfer, communication procedure. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy,
16、(c) BSI iv blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS Z 15:1998 BSI 06-19991 1 Scope This International Standard lays down the common requirements which define the data routing service of a spacec
17、raft telecommand. The intent of this document is to provide a common framework within which space agencies may implement compatible future spacecraft telecommanding systems. 2 Requirements Requirements are the technical recommendations made in the following publication (reproduced on the following p
18、ages), which is adopted as an International Standard: CCSDS 202.0-B-2, November 1992, Recommendation for space data systems standards Telecommand Part 2: Data routing service. For the purposes of international standardization, the modification outlined below shall apply to the following pages of pub
19、lication CCSDS 202.0-B-2. Pages i to vi This part is information which is relevant to the CCSDS publication only. Page vi Add the following information to the references indicated: 3 Document CCSDS 203.0-B-1, January 1987 is equivalent to ISO 12174:1998. 4 Document CCSDS 201.0-B-1, January 1987 is e
20、quivalent to ISO 12171:1998. 5 Document CCSDS 102.0-B-3, November 1992 is equivalent to ISO 13419:1997. 6 Document CCSDS 101.0-B-3, May 1992 is equivalent to ISO 11754:1994. 7 Document CCSDS 202.1-B-1, October 1991 is equivalent to ISO 12173:1998. 8 Document CCSDS 701.0-B-2, November 1992 is equival
21、ent to ISO 13420:1997. 3 Revision of publication CCSDS 202.0-B-2 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 202.0-B-2. To this end, NASA will act as a lia
22、ison body between CCSDS and ISO. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontroll
23、ed Copy, (c) BSI BS Z 15:1998 BSI 06-19993 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006,
24、Uncontrolled Copy, (c) BSI BS Z 15:1998 BSI 06-19995 CCSDS RECOMMENDATION FOR TELECOMMAND: DATA ROUTING SERVICE Authority This Recommendation reflects the consensus technical agreement of the following member Agencies of the Consultative Committee for Space Data Systems (CCSDS): The following observ
25、er Agencies also concur with this Recommendation: This Recommendation is published and maintained by: CCSDS Secretariat Program Integration Division (Code-OI) National Aeronautics and Space Administration Washington, DC 20546, USA Issue: Date: Location: Blue Book, Issue 2 November 1992 CCSDS Meeting
26、 November 1992 Greenbelt, MD, USA oBritish National Space Centre (BNSC)/United Kingdom. oCanadian Space Agency (CSA)/Canada. oCentral Research Institute of Machine Building (TsNIIMash)/Russian Federation. oCentre National DEtudes Spatiales (CNES)/France. oDeutsche Forschungsanstalt fr Luft- und Raum
27、fahrt e.V.(DLR)/Germany. oEuropean Space Agency (ESA)/Europe. oInstituto de Pesquisas Espaciais (INPE)/Brazil. oNational Aeronautics and Space Administration (NASA)/USA. oNational Space Development Agency of Japan (NASDA)/Japan. oChinese Academy of Space Technology (CAST)/Peoples Republic of China.
28、oCentral Research Institute of Physics (CRIP)/Hungary. oDepartment of Communications, Communications Research Centre (DOC-CRC)/Canada. oInstitute of Space and Astronautical Science (ISAS)/Japan. CCSDS 202.0-B-2iNovember 1992 Licensed Copy: London South Bank University, London South Bank University,
29、Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS Z 15:1998 6 BSI 06-1999 CCSDS RECOMMENDATION FOR TELECOMMAND: DATA ROUTING SERVICE Statement of intent The Consultative Committee for Space Data Systems (CCSDS) is an organization officially established by the management of member spa
30、ce Agencies. The Committee meets periodically to 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 RECOMMENDATION
31、S and are not considered binding on any Agency. This RECOMMENDATION is issued by, and represents the consensus of, the CCSDS Plenary body. Agency endorsement of this RECOMMENDATION is entirely voluntary. Endorsement, however, indicates the following understandings: No later than five years from its
32、date of issuance, this Recommendation will be reviewed by the CCSDS to determine whether it should: 1) remain 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
33、a RECOMMENDATION is issued, existing CCSDS-related Agency standards and implementations are not negated or deemed to be non-CCSDS compatible. It is the responsibility of each Agency to determine when such standards or implementations are to be modified. Each Agency is, however, strongly encouraged t
34、o direct planning for its new standards and implementations towards the later version of the Recommendation. oWhenever an Agency establishes a CCSDS-related STANDARD, this STANDARD will be in accord with the relevant RECOMMENDATION. Establishing such a STANDARD does not preclude other provisions whi
35、ch an Agency may develop. oWhenever an Agency establishes a CCSDS-related STANDARD, the Agency will provide other CCSDS member Agencies with the following information: The STANDARD itself. The anticipated date of initial operational capability. The anticipated duration of operational service. oSpeci
36、fic service arrangements shall be made via memoranda of agreement. Neither this RECOMMENDATION nor any ensuing STANDARD is a substitute for a memorandum of agreement. CCSDS 202.0-B-2iiNovember 1992 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:
37、00 2006, Uncontrolled Copy, (c) BSI BS Z 15:1998 BSI 06-19997 CCSDS RECOMMENDATION FOR TELECOMMAND: DATA ROUTING SERVICE Foreword This document, which is a technical Recommendation prepared by the Consultative Committee for Space Data Systems (CCSDS), is intended for use by participating space Agenc
38、ies in their development of space telecommand systems. This Recommendation allows the implementing organizations within each Agency to proceed coherently with the development of compatible Standards for the flight and ground systems that are within their cognizance. Agency Standards derived from thi
39、s Recommendation may implement only a subset of the optional features allowed herein, or may incorporate features not addressed by the Recommendation. In order to establish a common framework within which the Agencies may develop standardized telecommand services, the CCSDS advocates adoption of a l
40、ayered systems architecture. Within this approach, specific layers of service (including their operational protocol and data structuring techniques) may be selected for implementation according to mission requirements. The current layered set of CCSDS telecommand Recommendations was developed to mat
41、ch the conventional free-flying mission environment, as characterized by the transmission of command data at relatively low uplink data rates to spacecraft of moderate complexity. Advanced Orbiting Systems (AOS), which are characterized by a more complex mission environment, including the transmissi
42、on of multiple data types at very high data rates to space vehicles which include extensive onboard data networking capability, may choose to use the AOS protocols and data structures defined in Reference 8 for both uplink and downlink or they may use the telecommand data structures and protocols de
43、fined here for uplink. This Recommendation for Telecommand Data Routing Service was developed within the layered architectural framework, and embraces the standard data structures and data communication procedures which may be used by conventional missions within the intermediate telecommand system
44、layers. Through the process of normal evolution, it is expected that expansion, deletion or modification to this document may occur. This Recommendation is therefore subject to CCSDS document management and change control procedures which are defined in Reference 1. CCSDS 202.0-B-2iiiNovember 1992 L
45、icensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS Z 15:1998 8 BSI 06-1999 CCSDS RECOMMENDATION FOR TELECOMMAND: DATA ROUTING SERVICE Document control NOTESubstantive changes from the previous issue are flagged
46、with change bars in the margin. DocumentTitleDateStatus and Substantive Changes CCSDS 202.0-B-1 Recommendation for Space Data System Standards. Telecommand, Part 2 Data Routing Service, Issue 1 January 1987 Original Issue CCSDS 202.0-B-2 Recommendation for Space Data System Standards Telecommand, Pa
47、rt 2 Data Routing Service, Issue 2 November 1992 Supersedes Issue 1 Removal of COP-0 the following bit is defined to be “Bit 1” and so on up to “Bit N-1”. When the field is used to express a binary value (such as a counter), the Most Significant Bit (MSB) shall be the first bit of the field, i.e., “
48、Bit 0”. CCSDS 202.0-B-2Page 1-1November 1992 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS Z 15:1998 12 BSI 06-1999 CCSDS RECOMMENDATION FOR TELECOMMAND: DATA ROUTING SERVICE In accordance with modern data
49、 communications practice, spacecraft data fields are often grouped into 8-bit “words” which conform to the above convention. Throughout this Recommendation, the following nomenclature is used to describe this grouping: By CCSDS convention, all “spare” bits shall be permanently set to value “zero”. Note that throughout this document, the word “Telecommand” may be abbreviated as “TC”. 8-BIT WORD = “OCTET” CCSDS 202.0-B-2Page 1-2November 1992 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:16 GMT