In the terminology of the Spatial Extender, this is the Spatial Reference system (SRS), a combination of an earth-based coordinate system and a set of numeric conversion parameters.
在Spatial extender术语中，这是Spatial Reference System (SRS)，它组合了基于地球的坐标系和一组数字转换参数。
It used orientational parameters on coordinate conversion. Thus obtained the calculating formulas of point position in original coordinate system, the precision analysis formulas were also given.
利用定向参数作为坐标转换参数，导出了在统一坐标系下点位坐标的计算公式，并对转换后的坐标进行了精度分析。
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