重力模型标定方法及分析

摘要

This paper firstly introduced the classification and impedance function form of gravity model,detailedly summarized the two commonly used methods to calibrate gravity model parameter that least square and test algorithm,and simply introduced the parameter testing method,lastly analysed the application scope and advantages and disadvantages of gravity model,laid foundation for the correct use of gravity model.%首先介绍了重力模型的分类与阻抗函数形式,详细总结了重力模型参数标定的两种常用方法——最小二乘法和试算法,并简单介绍了参数检验的方法。最后针对重力模型的适用范围与优缺点进行了分析,为重力模型的正确运用奠定了基础。