GB/T 17941-2008Quality requirement for digital surveying and mapping achievements (English PDF)

1 Scope

This standard defines the quality elements of digital surveying and mapping results and the basic requirements to be met.

This standard applies to digital elevation models, digital orthophoto check imagery, digital raster maps, DLG and other digital surveying and mapping results

Acceptance and quality assessment, is the fundamental basis for its technical design and quality control. Other types of digital mapping results may refer to use.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 13923 fundamental geographic information features and classification codes

GB/T 13989 national basic scale topographic maps and numbering

GB/T 18315 digital topographic map series and basic requirements

CH/T 1007 Basic Geographic Information Metadata digital products

3 Terms and Definitions

The following terms and definitions apply to this standard.

4 General

Quality 4.1 digital mapping results is through a number of quality elements/quality sub-elements to describe. Different types of digital surveying and mapping results,

Its quality is different elemental composition.

Quality 4.2 digital element mapping results are shown in Table 1.

Table 1 digital quality element mapping results

Quality elements Quality sub-element Description

Spatial Reference System

Geodetic datum geodetic datum used

Height Datum elevation datum used

Depth reference depth reference adopted

Map projection and map projection parameters used […]