GB/T 46405-2025Metadata for space science data (English PDF)

空间科学数据元数据

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 5, 2025

Implementation date

October 5, 2025

Scope

GB/T 46405-2025 is the English-translated version of 空间科学数据元数据.

GB/T 46405-2025 is the Chinese national standard covering describing the data a space mission produces - the mission, instrument and observation identification, the time and spatial coverage, the processing level and provenance, the calibration applied, and the access and citation information. At 44,500 words. First edition, under the Ministry of Science and Technology, already in force. Issued on 5 October 2025, it has been in force since 5 October 2025.

Document preview — GB/T 46405-2025

National Standard of the People's Republic of China

ICS: 07.040
Classification: A 46

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1.Scope1
2 Normative References1
3.Terms and Definitions1
4.Composition of space science data metadata2
5.Metadata Description Methods2
6.Dataset metadata2
6.1 Dataset Identifier2
6.1.1 Identifier Type3
6.1.2 Identifier Number3
6.1.3 Registration Date3
6.2 Dataset Name3
6.3 Dataset Aliases3
6.4 Description4
6.5 Keywords4
6.6 Subject Classification4
6.7 Thematic Classification4
6.8 Related Personnel Information4
6.8.1 Associated Personnel Identifier5
6.8.2 Personnel Roles5
6.9 Related Document Information5
6.9.1 Associated Document Identifier5
6.9.2 Remarks6
6.10 Related Software Information6
6.10.3 Access Address6
6.10.4 Remarks7
6.11 Information on related data management organizations7
6.11.1 Identifier for Associated Data Management Organization7
6.11.2 Management Type7
6.12 Related Dataset Information7
6.12.1 Association Dataset Identifier8
6.12.2 Dataset Association Types8
6.13 Source Information8
6.13.1 Dataset Providers8
6.13.2 Supported Project9
6.13.3 Source Instrument Identifier9
6.14 Processing Information9
6.14.1 Processing Level9
6.14.2 Storage Format9
6.14.3 Encoding Method10
6.14.4 Dataset Generation Date10
6.14.5 Data set size10
6.14.6 Number of data files.11
6.14.7 Associated Data File Identifier11
6.15 Time Information11
6.15.1 Time range11
6.15.2 Time resolution12
6.15.3 Minimum time resolution13
6.15.4 Maximum time resolution13
6.15.5 Exposure time13
6.15.6 Minimum exposure time13
6.16 Spatial Region13
6.17 Shared Information14
6.17.1 Shared Status14
6.17.2 Dataset Release Date14
6.17.3 Shared data time range15
6.17.4 Intellectual Property Category15
6.17.5 Protection period16
6.17.6 Sharing Method16
6.17.7 Shared Scope16
6.17.8 Shared Condition16
6.17.9 Application Process16
6.17.12 Acknowledgments17
6.18 Notification Message17
6.19 Metadata Publishing Organizations17
6.20 Metadata first published date18
6.21 Metadata latest release date18
6.22 Metadata Version18
6.23 Predecessor version identifier18
6.24 Metadata Revision History18
7 Data file metadata19
7.1 Data File Identifier19
7.1.1 Identifier Type19
7.1.2 Identifier number19
7.1.3 Registration Date19
7.2 Filename19
7.3 Relative Path20
7.4 Time range20
7.4.1 Start Time20
7.4.2 End Time20
7.4.3 Note21
7.5 Related Data Parameter Identifiers21
7.6 File size21
7.6.1 Value21
7.6.2 Unit21
7.7 Verification Information22
7.7.1 Hash Function22
7.7.2 Hash function value22
7.8 Metadata Publishing Organizations22
7.9 Metadata first release date22
7.10 Metadata latest release date23
7.11 Metadata Version23
7.12 Predecessor version identifier23
7.13 Metadata Revision History23
8 Data Parameters Metadata23
8.1 Data Parameter Identifiers23
8.1.1 Identifier Type24
8.1.2 Identifier number24
8.1.3 Registration Date24
8.2 Data Parameter Names24
8.3 Physical Object Types24
8.4 Physical parameters25
8.5 Value Type25
8.6 Unit25
8.7 Physical range25
8.7.1 Scope Type25
8.7.2 Minimum value26
8.7.3 Maximum value26
8.7.4 Unit26
8.8 Minimum effective value26
8.9 Maximum effective value26
8.10 Fill value27
8.11 Time resolution27
8.12 Minimum time resolution27
8.13 Maximum time resolution27
8.14 Coordinate System Information27
8.14.1 Coordinate System Type28
8.14.2 Coordinate System Name28
8.15 Metadata Publishing Agencies28
8.16 Metadata first published on28
8.17 Metadata latest release date28
8.19 predecessor identifier29
8.20 Metadata Revision History29
9 Instrument metadata29
9.1 Instrument Identifier29
9.1.1 Identifier Type29
9.1.2 Identifier number30
9.1.3 Registration Date30
9.2 Instrument Name30
9.3 Instrument Aliases30
9.4 Description30
9.5 Keywords30
9.6 Supported Project31
9.7 Related Personnel Information31
9.7.1 Associated Personnel Identifier31
9.7.2 Personnel Roles31
9.8 Related Document Information31
9.8.1 Associated Document Identifier32
9.8.2 Remarks32
9.9 Associated Observation Station Identifier32
9.10 Instrument Type32
9.11 Runtime32
9.11.1 Start time33
9.11.2 End Time33
9.11.3 Note33
9.12 Access address33
9.13 Prompt Message34
9.14 Metadata Publishing Organizations34
9.15 Metadata first published date34
9.19 Metadata Revision History35
10 Observatory metadata35
10.1 Observation station identifier35
10.1.1 Identifier Type35
10.1.2 Identifier number35
10.1.3 Registration Date36
10.2 Observation Station Name36
10.3 Observatory, also known as36
10.4 Description36
10.5 Keywords36
10.7 Related Personnel Information37
10.7.1 Related Personnel Identifier37
10.7.2 Personnel Roles37
10.8 Related Document Information37
10.8.1 Associated Document Identifier38
10.8.2 Note38
10.9 Observation Network38
10.10 Observation station type38
10.11 Ground location information38
10.11.1 Longitude39
10.11.2 Latitude39
10.11.3 Altitude39
10.12 Track position information39
10.12.1 Orbit Type40
10.12.2 Semi-major axis40
10.12.3 Eccentricity40
10.13.1 Start time41
10.13.2 End Time41
10.13.3 Note41
10.14 Access address42
10.15 Notification message42
10.16 Metadata Publishing Agencies42
10.17 Metadata first release date42
10.18 Latest metadata release date.42
10.21 Metadata Revision History43
11 Data Management Agency Metadata43
11.1 Data Management Organization Identifier43
11.1.1 Identifier Type43
11.1.2 Identifier number44
11.1.3 Registration Date44
11.2 Name of Data Management Organization44
11.3 Data Management Organization Aliases44
11.4 Description44
11.5 Keywords45
11.6 Related Personnel Information45
11.6.1 Associated Personnel Identifier45
11.6.2 Personnel Roles45
11.7 Access address45
11.8 Prompt Message46
11.9 Metadata Publishing Organizations46
11.10 Metadata first release date46
11.11 Metadata latest release date46
11.12 Metadata Version46
11.13 Previous version identifier47
11.14 Metadata Revision History47
12 Personnel metadata47
12.1 Personnel Identifier47
12.1.1 Identifier Type47
12.1.2 Identifier number47
12.1.3 Registration Date48
12.2 Personnel Names48
12.3 Personnel Aliases48
12.4 Organization Names48
12.5 Professional Title48
12.6 Communication Address49
12.7 Email49
12.8 Phone number49
12.9 Fax number49
12.10 Metadata Publishing Organizations49
12.11 Metadata first publication date49
12.12 Metadata Latest Release Date50
12.13 Metadata Version50
12.14 Previous version identifier50
12.15 Metadata Revision History50
13 Document metadata50
13.1 Document Identifier50
13.1.1 Identifier Type51
13.1.2 Identifier number51
13.1.3 Registration Date51
13.2 Document Name51
13.3 Document Type51
13.4 Document Version52
13.5 Languages52
13.6 Storage Format52
13.7 Encoding Method52
13.8 File size52
13.8.1 Value53
13.8.2 Unit53
13.9 Verification Information53
13.9.1 Hash Functions53
13.9.2 Hash function value53
13.10 Access address54
13.11 Prompt Message54
13.12 Metadata Publishing Organizations54
13.13 Metadata first release date54
13.14 Metadata latest release date54
13.15 Metadata Version55
13.16 Previous version identifier55
13.17 Metadata Revision History55
14 Types and Principles of Metadata Extensions55
14.1 Types of Metadata Extensions55
76 Space Science Data Metadata Index77

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part

1.Structure and Drafting Rules of Standardization Documents". Drafting. Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the Ministry of Science and Technology of the People's Republic of China. This document was prepared by the National Technical Committee on Standardization of Science and Technology Platforms (SAC/TC486) and the National Technical Committee on Standardization of Space Science and its Applications. It is jointly managed by the committee (SAC/TC312). This document was drafted by: National Space Science Center, National Science and Technology Infrastructure Platform Center, Chinese Academy of Sciences. Wentai, Institute of High Energy Physics, Chinese Academy of Sciences, Center for Space Application Engineering and Technology, Chinese Academy of Sciences, China National Institute of Standardization, Beijing University National Meteorological Center (National Space Weather Monitoring and Early Warning Center), Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Chinese Academy of Agricultural Sciences Agricultural Information Institute of the Chinese Academy of Sciences, Beijing University of Aeronautics and Astronautics, Institute of Geology and Geophysics of the Chinese Academy of Sciences, Shandong University, and the Chinese Academy of Sciences The Computer Network Information Center of the Academy, Zhongke Xingtu Weitianxin Technology Co., Ltd., and Beijing Kaiyun United Information Technology Group Co., Ltd. Department, Documentation and Information Center of Chinese Academy of Sciences, University of Science and Technology of China, China University of Geosciences (Beijing). The main drafters of this document are. Hu Xiaoyan, Zou Ziming, Xiong Senlin, He Yuntao, Dai Lei, Zuo Wei, Zheng Shijie, Han Pengwu, Wang Zhiqiang, and Zhang Donghe. Zhang Xiaoxin, Wang Juanle, Wang Jian, Chen Gang, Cui Chenzhou, Yu Yiqun, Le Xin'an, Ling Zongcheng, Liu Ning, Feng Decai, Kang Ruiqing, Lü Liangqing, Xu Qi, Tong Jizhou Qin Jiamei, Tan Hong, Xu Kaicheng, Yang Qinghai, Ma Wenzhen, Chen Xin, Zhang Hongmei, Mi Linying, Tao Yihan, Fang Xin, Lü Yingbo, Xia Junbao. Space science data metadata

1 Scope

This document specifies the description methods, composition, entities, and elements of space science data metadata, and establishes extended classes for space science metadata. Types and principles. This document applies to the submission, registration, and cataloging of scientific data in the fields of space science, including space physics, space astronomy, lunar and planetary science. Archive, create databases, publish, share, exchange, query, and use. This document does not apply to data in space life sciences and biotechnology, aerospace medicine, and microgravity science.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document.

GB/T 7408.1 Representation for the Interchange of Date and Time Information - Part

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 space science Using spacecraft, aircraft, and ground-based work platforms, we study the physics occurring on Earth, in the Earth-Sun space, in the solar system, and even throughout the entire universe. The discipline of chemistry and life, as well as natural phenomena and their laws. [Source: GB/T 30114.1-2013, 2.1]

3.2 scientific data The original, primary, and other information reflecting the essence, characteristics, and laws of change of the objective world, accumulated through human social and technological activities or acquired through other means. Basic data, and the various types of data generated after systematic processing and organization. [Source: GB/T 39912-2021, 3.2]

3.3 metadata Data that defines and describes other data. [Source: GB/T 18391.1-2009, 3.2.16]

3.4 metadata entity A group of metadata elements that describe the same characteristics of the data. [Source: GB/T 30523-2023, 3.5]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 81 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 7408.1

Editions of GB/T 46405

Edition	Title	Revision	Status
GB/T 46405-2025	Metadata for space science data	current edition	Current

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