BS ISO 14950-2004 Space systems - Unmanned spacecraft operability《航天系统 无人宇宙飞船的可操作性》.pdf
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1、BRITISH STANDARD AEROSPACE SERIES BS ISO 14950:2004 Space systems Unmanned spacecraft operability ICS 49.140 BS ISO 14950:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 2 April 2004 BSI 2 April 2004 ISBN 0 580 43607 1 National foreword
2、This British Standard reproduces verbatim ISO 14950:2004 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee ACE/68, Space systems and operations, which has the responsibility to: A list of organizations represented on this comm
3、ittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” faci
4、lity of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligation
5、s. aid enquirers to understand the text; present to the 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. Summary of pag
6、es This document comprises a front cover, an inside front cover, the ISO title page, pages ii to vi, pages 1 to 24, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Dat
7、e Comments Reference number ISO 14950:2004(E)INTERNATIONAL STANDARD ISO 14950 First edition 2004-02-15 Space systems Unmanned spacecraft operability Systmes spatiaux Oprabilit des satellites non habits BSISO14950:2004IS:05941 O4002(E) DPlcsid Fremia ihTs PDF file mya ctnoian emdebt dedyfepcaes. In c
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12、1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mial coirypthgis.o gro We bwww.is.o groii ISO 4002 Allr ithgsr esedevrBSISO14950:2004IS:05941 O4002(E) I SO 4002 All irthgs ersedevr iiiContents Page Foreword iv 0 Introduction v 0.1 Spacecraft operation v 0.2 Spacecraft operability. v 0.
13、3 Conventions . vi 0.4 Guidelines for applicability . vi 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Abbreviated terms. 6 5 Autonomy levels . 7 6 General requirements. 8 6.1 Observability . 8 6.2 Commandability 8 6.3 Compatibility . 8 6.4 Security 8 6.5 Safety 8 6.6 Flexibility
14、 9 6.7 Efficiency . 9 6.8 Testability 9 6.9 Applicability matrix. 10 7 Detailed requirements 10 7.1 Spacecraft observability requirements. 10 7.2 Spacecraft commandability requirements . 12 7.3 Memory management . 14 7.4 On-board processing functions 15 7.5 Equipment/subsystem-specific requirements
15、. 19 Annex A (informative) Mission constants 23 BSISO14950:2004IS:05941 O4002(E) iv I SO 4002 All irthgs ersedevrForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards
16、 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-governmental, in liaison with ISO, also take p
17、art 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/IEC Directives, Part 2. The main task of technical committees is to
18、 prepare International Standards. Draft International Standards 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. Attention is drawn to the possibility t
19、hat 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. ISO 14950 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 14, Space systems and operations. BSIS
20、O14950:2004IS:05941 O4002(E) I SO 4002 All irthgs ersedevr v0 Introduction 0.1 Spacecraft operation The operation of a spacecraft is an activity performed from a mission control centre in order to: a) ensure availability of mission and science products/services or data; b) carry out routine housekee
21、ping operations; c) recover from on-board contingencies; d) manage on-board resources in order to maximize the provision of products/services and the mission lifetime. 0.2 Spacecraft operability The operability is a feature of the spacecraft itself that enables a specified ground segment comprising
22、hardware, software, personnel, and procedures, to operate the space segment during the complete mission lifetime of the spacecraft, by using a minimum of resources, while maximizing the quality, quantity, and availability (or timeliness of delivery) of mission products, without compromising spacecra
23、ft safety. The key factors that determine the operability of a spacecraft are: a) the ability to control the spacecraft in any nominal or non-nominal scenario in order to maintain the mission availability; b) the capability to manage on-board resources and to maximize the mission lifetime; c) the ex
24、tent to which its operations are routine and non-hazardous, thus minimizing ground segment resources for all operations including fault avoidance and correction; d) the flexibility of the design for spacecraft reconfiguration, including software, in orbit; e) the reliability of operations and robust
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