【摘要】 为了克服在公路勘测领域将GPS坐标转换为国家坐标(地方坐标、线路坐标)的传统方法的两个缺陷(一个是转换精度不高,另一个是极易出现病态矩阵),采用了将三维坐标(X,Y,Z)分开转换的策略(三维分离回归法),介绍了三维分离回归法的基本思想、转换过程及转换实例,在分开转换的过程中应用了多元线性回归理论。三维分离回归法的实际应用显示该方法确实能够克服转换中的病态矩阵问题,使三雏转换精度提高一倍。理论和实践均证明,三维分离回归法适用于GPS坐标向国家坐标的转换。更多还原

【Abstract】 In order to surmount the two primary shortcomings of traditional methods of transforming the GPS coordinate into state coordinate or local coordinate and line coordinate in highway survey which is lower in transforming precision and the morbid matrix crops up at times, the tactic of three-dimensional coordinate transformation separately has been adopted. The new method is named the three-dimensional separation regression method. The basic principle and transformation process and transformation example of the three-dimensional separation regression method have been introduced in this paper. The new method uses the linear regression theory. The new method can avoid the morbid matrix occurrence, and can raise one times in transformation precision. The three-dimensional separation regression method is suitable for transforming the GPS coordinate into the state coordinate.更多还原