弧长公式在坐标反算中的应用

Application of arc length formula in coordinate inverse

文中通过分析子午圈弧长和平行圈弧长与高斯平面直角坐标的近似对应关系,以及子午线收敛角的影响,提出了根据两点的高斯平面直角坐标及其中一点的大地坐标,计算另一点大地坐标的方法,并编制了相应的AutoCAD计算程序。

In the paper, by analyzing the approximate correspondence between the meridian circle arc length and the parallel circle arc length and Gaussian plane Cartesian coordinates and the influence of the convergence angle of the meridian, method using one of the geodetic coordinates to calculate another point of the geodetic coordinates was pro- posed according two points of the Gaussian plane Cartesian coordinates, and the corresponding AutoCAD calculation programs were worked out.