2000 Technical Guide to National geocoordinate System

2000 Technical Guide to National geocoordinate System

In the 1950s S and 1980s s, China established the National Geographic coordinate system-the Beijing Coordinate System in 1954 and the 1980 Xi'an coordinate system, and measured the topographic maps of various scales, it provides basic surveying and mapping support for national economic and social development. Currently, most of the published maps on the market are in the Beijing 54 coordinate system and Xi'an 80
Standard. With the progress of society, the national economic construction, national defense construction, social development, scientific research, and other new requirements on the national coordinate system, it is urgent to use the coordinate system with the origin in the earth Mass Center (
(Hereinafter referred to as the earth coordinate system) as the national Earth coordinate system. The use of the central coordinate system is conducive to the use of modern space technology to maintain and quickly update the coordinate system, to determine the three-dimensional coordinates of high-precision earth control points, and improve the ing
Work efficiency.

The State Council approved the activation of China's Central Earth coordinate system-July 1, 2008 National Earth coordinate system in 2000. The English name is China Geodetic Coordinate System 2000, abbreviated as cgcs2000.