GA/T 629-2006Coordinate systems and scales for police electronic map (English PDF)

Foreword

This standard was proposed by the Information and Communication Bureau of the Ministry of Public Security.

This standard is under the jurisdiction of the Computer and Information Processing Standardization Technical Committee of the Ministry of Public Security.

1 Scope

This standard specifies the police electronic map coordinate system and scale.

This standard applies to the construction, application and management of police geographic information systems.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard.

GB/T 18315 digital topographic map series and basic requirements

3 Basic principles of coordinate system and scale selection

The basic principles of police electronic map coordinate system and scale selection are.

---According to the three levels of application of the Ministry of Public Security, the Provincial/Autonomous Region Public Security Department, and the Municipal Public Security Bureau at or above the prefecture level, respectively select the corresponding scale and sit Standard system

--- According to the national basic scale and coordinate system requirements, select the corresponding scale and coordinate system;

--- Select the appropriate scale and coordinate system according to the application requirements and local data.

4 Scale series and code

5 Scale selection