利用参数估计求得水准测量中的点的平面坐标和高程-Using the parameter estimates obtained Leveling the Plane coordinates and elevation

利用最小二乘算法实现对三维平面的拟合，预报误差法参数辨识-松弛的思想，鲁棒性好，性能优越。- Least-squares algorithm to fit a three-dimensional plane, Prediction Error Method for Parameter Identification- the idea of relaxation, Robustness, superior performance.