西安坐标系

西安80坐标系与WGS-84坐标系转换模型的确定

The Transfer Model between the Xi'an 80 and WGS-84 Coordinate Systems

在1954北京坐标系和西安80坐标系平面平差时，采用原有坐标控制点坐标改正数之和为零的条件，保证了GPS网的内部一致性。

For Beijing 54 and Xi ′ an 80 coordinate systems , the sums of coordinate change of existed points equal to zero as the con dition adopted , which can keep the internal consistency of the GPS network .

GPS输出数据是WGS-84坐标系，我国地图使用北京-54或西安-80坐标系，以不同的坐标系的数据进行匹配，会造成较大误差。

The GPS output data accords with WGS-84 coordinate , but in China maps Beijing-54 or Xi'an-80 coordinate is used . To match the data from different coordinate , big error will be caused .

所有的空间数据都基于西安80坐标系下的高斯&克吕格3度带投影。

All of the spatial data was based on Xi ' an 80 Coordinate System , Gauss Kruger 3 Degree Projection .

图件更新北京54和西安80坐标系转换方法研究

Research on practical map update coordinates transformation between Beijing ' 54 and Xian ' 80 geodetic coordinates systems for map update

关于北京54和西安80坐标系相互转换的探讨&基于湖北省境内控制成果

DISCUSSION ABOUT TRANSFORMATION BETWEEN BEIJING 54 AND XI ' AN 80 COORDINATE SYSTEM & Baed on the geodetic database in Hubei province