STUDY ON NON-UNIFORM B-SPLINE LEAST SQUARES APPROXIMATION OF REGIONAL GEOMAGNETIC ANOMALY FIELD
局部地磁异常场的非均匀B样条最小二乘逼近

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.