中文摘要：

在佘山25-m射电天线归心测量的资料解析中，对空间圆周拟合、空间直线拟合以及空间直线与平面的交点确定时，通过坐标变换方法，压制了观测噪声，确保了参数解的稳定性与准确性，得到了天线参考点的三维坐标及轴线偏差，精度达到了1mm水平，表明了归心测量各环节设计与实施的合理性以及坐标变换方法用于此处资料解析的有效性。

英文摘要：

In the data analysis of site survey at the Sheshan 25-m radio telescope, the method of coordinate transformation was applied into the fittings of a space circle and a space line, and into the determination of the cross of a space line and a plane, which sustained the stability and precision of parameter solutions. The resulted 3-dimensional coordinates of the reference mark and the axis-off- set were in the precision of lmm and which showed the rationality of the strategy and implementation of the steps in this survey as well as the validity of the application of coordinate transformation into the data analysis of this survey.