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摘要：
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有些地区使用独立坐标系 ,独立坐标系和我国工程界广泛使用的 BJS- 5 4坐标系之间的换算关系一般是保密的。由于无法获取独立坐标系的椭球、投影等相关参数 ,直接使用 GPS就有困难。本文利用最小二乘法进行推导计算 ,回归了换算公式 ,把图纸上的独立坐标换算成 BJS- 5 4坐标 ,支持了 GPS的施工导航。
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Independent coordinate systems are used in some regions.The relationship of conversion between such independent coordinates and the BJS 54 coordinate system,widely used in China's engineering field,is generally confidential.It is difficult to directly employ the GPS owing to the inaccessibility of the ellipsoidal parameters and projection parameters of the independent coordinate systems.Derivations have been made with the least square method to have the conversion equation regressed,thus converting the independent coordinates on the drawings into BJS 54 coordinates to support the use of GPS in construction navigation
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