第二部分是移动曲面拟合法的研究和改进。
In the second part, we mainly research and improve the moving surface fitting.
本文主要由复杂曲面造型方法、改进的移动曲面拟合法研究和实例应用三部分组成。
This paper mainly consists of the theoretical methods of complex surface modeling, the research of improved moving surface fitting and analysis of example.
简要介绍了转换GPS高程的二次曲面拟合法，以及神经网络BP算法的基本结构和数学公式。
The conicoid fitting method used for transforming GPS elevation, and the basic structure and mathematic formulas of BP algorithm of neural networks are introduced briefly in this paper.
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