摘要
在工程测量中,二次曲面拟合中的多项式拟合法,将高程异常近似地认为是一定范围内各点坐标的曲面函数,用这一拟合多项式函数来计算曲面覆盖区域内其它点的高程异常和正常高。根据已知点上的高程异常值构造二次拟合曲面,来模拟高程异常,在测区内布设均匀的控制点,以对拟合模型进行控制,避免曲面出现较大误差的升降趋势,并计算了拟合误差。
Polynomial fitting of quadratic surface is the most common method in elevation of GPS. Itconsiders changing smoothly within a certain range. The method of polynomial fitting can calculate heightanomaly and normal height of other points under this surface. Approximating a quadratic surface by theabnormal height of GPS points which have been surveyed, and then, calculate abnormal height of other pointsand error.
出处
《石家庄铁路职业技术学院学报》
2017年第4期52-56,共5页
Journal of Shijiazhuang Institute of Railway Technology
关键词
工程控制
网高程异
常二次曲面
残差
control network height anomaly quadratic surface residual
