空间直角坐标至大地坐标的直接严密变换

A Direct Rigorous Conversion from Cartesian to Geodetic Coordinates Based on the Solution to Univariate Cubic Equation

基于一元三次方程的求解,给出了空间直角坐标向大地坐标直接转换的严密计算公式,并用算例说明了其正确性。本文提出的方法完全可以替代现有的以数值迭代计算为基础的转换方法。

Based on the solution to univariate cubic equation, this paper puts forward a rigorous coordinate conversion method from Cartesian system to geodetic system. An example is given to validate this method. It can be used in practice in stead of the existing conversion methods which are on the basis of iteration procedure.