GB/T 33178-2016National fundamental scale maps 1:250 000 1:500 000 1:1 000 000 orthophoto maps (English PDF)

1 Scope

This standard specifies the composition of the national basic scale map 1. 2500000, 1. 500000, 1. 1000000 orthophoto map,

Technical requirements, content and expression, quality inspection, marking, packaging and confidentiality.

This standard applies to the national basic scale map 1. 2500000, 1. 500000, 1. 1000000 orthophoto map of the production,

Quality control and use. Other image maps can be used with reference.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 13989 National basic scale topographic map

GB/T 17798 Geospatial Data Interchange Format

Quality inspection and acceptance of digital surveying and mapping results GB/T GB/T 20257.4 National Basic Scale Map Schema Part 4. 1. 250000, 1. 500000, 1. 1000000 Terrain

Figure diagram

CH/T 1007 Basic Geographic Information Digital Product Metadata

Code for naming and document naming of digital data of basic geographic information

3 terms and definitions

The following terms and definitions apply to this document.

4 constitute

The digital orthophoto map results consist of digital orthoimage map data, metadata, and related documents. Relevant documents refer to the need to follow

Digital orthoimage map data is provided at the same time with other attachments and descriptive information, such as chart books, technical summary reports.