The Beijingcoordinatesystem in 1954 and the Xi 'an coordinate system in 1980 are two kinds of coordinate systems kept in the map document presently in China.
1954年北京坐标系和1980西安坐标系是我国目前地图资料中存在的二种坐标系统。
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The coordinatesystem GPS handset used is WGS-84 coordinatesystem, in ordinary surveying, 5 parameters method can be used to converse it to 54 Beijing or 80 state coordinate systems.
Establish comprehensive information system for the Olympic construction in Beijing, and coordinate commands over all the Olympic project construction throughout the city.