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GB/T 46139-2025Core metadata for polar orbiting meteorological satellites (English PDF)

极轨气象卫星核心元数据

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 29, 2025

Implementation date

December 1, 2025

Scope

GB/T 46139-2025 is the English-translated version of 极轨气象卫星核心元数据.

GB/T 46139-2025 is the Chinese national standard covering the metadata backbone of a polar satellite programme — the mission, platform and instrument identification, the orbit and the observation geometry, the processing levels and their provenance, the calibration events, and the identifiers that keep decades of data usable. At 20,000 words. First edition, under the China Meteorological Administration, with the L1C format standard GB/T 46253-2025. In force from 1 December 2025. Issued on 29 August 2025, it has been in force since 1 December 2025.

Document preview — GB/T 46139-2025

National Standard of the People's Republic of China

ICS: 07.060
Classification: A 47

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

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Core metadata description2
4.1 Overview2
4.2 Chinese Name2
4.3 English Name2
4.4 Definition2
4.5 Constraints/Conditions2
4.6 Maximum number of occurrences2
4.7 Data Types2
4.8 Domain2
5 Core metadata composition3
5.1 Overview3
5.2 Metadata Entity Information Subset3
5.3 Identification Information Subset3
5.4 Reference System Information Subset4
5.5 Content Information Subset4
5.6 Data Quality Information Subset4
5.7 Restricting Information Subset4
5.8 Distribution Information Subset4
5.9 Reference and responsible party information subset4
5.10 Coverage Subset4
5.11 Obtaining a subset of information4
5.12 Archive Information Subset4
5.13 General Information4
6 Metadata Extensions4
6.1 General Provisions4
6.2 Extension Type4
6.3 Extension Rule5
Appendix A (Normative) Core Metadata Contents of Polar-orbiting Meteorological Satellites6
Appendix B (Informative) Field Code Table32
Reference41

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Meteorological Administration.

This document is under the jurisdiction of the National Technical Committee for Satellite Meteorology and Space Weather Standardization (SAC/TC347).

This document was drafted by: National Satellite Meteorological Center, 61741 Unit of the Chinese People's Liberation Army, National Meteorological Information Center, Liaoning Provincial Meteorological Information Center, Huaihe River Basin Meteorological Center, Chongqing Meteorological Science Institute, Chinese Academy of Sciences Aerospace Information Innovation Institute, National Public Credit and Geospatial Information Center, National Satellite Ocean Application Center, China Resources Satellite Application Center, Beijing Huayun Xingditong Technology Co., Ltd., China Aerospace Standardization Institute.

The main drafters of this document are: Qi Yonggang, Xiao Meng, Ma Boyuan, Guo Yan, Wen Huayang, Yang Shiqi, Ren Chuan, Liu Yujia, Cheng Tianhai, Yang Yaodong, Wang Guanzhu, Zhao Jinquan, Xu Zhe, Sun Anlai, Xian Di, Hu Xiaohua, Gao Yun.

Polar-orbiting meteorological satellite core metadata

1 Scope

This document specifies the description, composition and extension requirements of core metadata for polar-orbiting meteorological satellites.

This document applies to the information management, sharing, query and field application of polar-orbiting meteorological satellite data and its production and service resources.

2 Normative references

GB/T 19710.1-2023

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 [Source. GB/T 39094-2020, 2.6]

A weather satellite that orbits the poles.

3.2 metadata

Information about the resource.

Note. A resource is an identifiable asset or means of satisfying a requirement, such as a dataset, set of datasets, service, document, activity, software, human resources or an institution.

[Source. GB/T 19710.1-2023, 3.10]

3.3 coremetadata

The minimum set of metadata (3.2) that describes the most basic information about the data.

[Source. GB/T 30523-2023, 3.3]

3.4 metadataelement

A self-contained unit of metadata (3.2).

NOTE 1 A metadata element is unique within a metadata entity.

Note 2 to entry. Synonymous with attribute and/or association in UML terminology.

NOTE 3 The attributes and relationships of a class are called metadata elements.

[Source. GB/T 19710.1-2023, 3.11, modified]

3.5 metadataentity

A set of metadata elements (3.4) that describe the same characteristics of data.

Note 1 to entry. Can contain one or more metadata entities.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 33 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 19710.1-2023

Editions of GB/T 46139

Edition	Title	Revision	Status
GB/T 46139-2025	Core metadata for polar orbiting meteorological satellites	current edition	Current

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