GPS高程异常拟合研究及精度分析

Resarch on Method of GPS Height Abnormal Fitting and Accuracy Analysis

本文论述了正交多项式和基于BP人工神经网络的GPS高程异常拟合原理,分析了这几种算法的优缺点。并结合实例计算,比较分析各方法的精度。最后得出改进的BP神经网络的方法精度要优于多项式拟合和标准BP算法。

The principle of quadric polynomail and artificial neural network for conversion of GPS height is discussed ,and their anvantages and disadvantages is presented .The pro-gram was done by Matlab software ,calculated with specific example .The accuracy was ana-lyzed and compared with different methods .At last the conclusion shows that the improved BP neural network is better than the standard BP neural network and quadric polynomail .