介绍基于逐步回归的GPS高程拟合方法原理和实现步骤,并通过SAS统计软件计算实现。通过实例计算,并与二次曲面拟合模型结果进行了比较,验证了方法的正确性。
The article introduced the principle of GPS elevation fitting method based on stepwise regression,which is realized by SAS software.Through calculation,and be compared with quadric surface fitting model results,the correctness of the method is validated.