GB/T 39608-2020Metadata for digital products of fundamental geographic information (English PDF)

1 Scope

This standard specifies the basic requirements and metadata content of basic geographic information digital achievements metadata:

This standard is applicable to the production, database construction, distribution and application of digital line drawing, digital orthophotograph, digital elevation model, and digital surface model:

Use, other geographic information digital results can be used as reference:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 13989 National Basic Scale Topographic Map Framing and Numbering

3 Terms and definitions

The following terms and definitions apply to this document:

3:1

Digital product

According to a certain data organization, the results are expressed and stored in digital form:

3:2

Fundamental Geographic Information Fundamental Geographic Information

Reflecting the natural and human features of the earth’s surface water system, residential areas and building facilities, transportation, pipelines, realms and political districts, landforms, vegetation and soil quality

The basic information of the location, form and attribute of the element, as well as place name and geospatial reference information:

Note: It is mainly represented by digital line drawing, digital orthophoto, digital elevation model, digital surface model, etc:

3:3

Metadata

Data about data: That is, information such as data identification, coverage, quality, spatial and temporal patterns, spatial reference system and distribution:

[GB/T 19710-2005, definition 4:5]

4 Basic requirements

4:1 The content of basic geographic information digital achievement metadata should include the identification information, spatial reference information, production information, quality information and

Distribute information: details as follows:

a) Identification information: the basic information of the data set, as well as information indicating its spatial scope and confidentiality level;

b) Spatial reference information: information about the method used by the data set to represent spatial information;

c) Production information: information such as the data source, producer, production time, and process methods used in the data set;

d) Quality information: quality evaluation information such as the accuracy, completeness, and connection of the data set;

e) Distribution information: relevant information of the data set provider:

4:2 Metadata files should be recorded in units of map sheets, administrative areas or other production and distribution units: Data flag of metadata file […]