引入基准旋转中心的坐标转换方法研究

摘要

In a regional plane coordinate system,due to strong correlations between coordinate vectors in the coordinate systems,the matrix of normal equations creates severe ill-conditioning in the coordinate transformation,and leads to unreliable transformation parameters between the coordinate systems.The ill-conditioning of the transformation coefficient matrix is solved by introducing datum rotation center in the plane coordinate transformation model,and reliable coordinate transformation parameters are obtained.This method is validated with practical data.%在区域平面坐标系统中,由于不同系统中坐标向量之间的强相关,致使坐标转换中法方程矩阵严重病态,导致求解的坐标系统之间的转换参数不可靠.数据处理结果表明,通过在平面坐标转换模型中引入基准旋转中心,解决转换系数矩阵病态的问题,得到可靠的坐标转换参数.