讨论非均匀B样条最小二乘数据拟合的基本原理,并分别就不规则点及规则网格点情形给出了相应的计算方法,给出了一个在局部地磁异常逼近中的应用实例,计算结果表明该方法具有很好的精度和稳定性。
The basic principle of non-uniform B-spline least squares fitting is discussed. Besides, the corresponding computation methods for irregular points and regular grid points are presented. Furthermore, an actual application in regional geomagnetic anomaly field are given. The results indicate that the accuracy and stability of this method can be ensured.