双三次样条插值函数乘积型计算原理及其应用

The Calculation Principle of Double Three Spline Interpolation Function and Its Application

阐述了带有导数要求的双三次样条插值函数的乘积型计算原理和方法，将二元问题转化为一元问题。此外，给出了双三次样条函数在加密地图数学基础等方面的应用。

Using the theory of spline function, the product calculation principle and method of double three spline function with derivate are obtained, and the application of double three B-splinc function in cartography is given.