步行格网与交通网结合的等时线生成方法  

A study of isochrone algorithm based on combination of pedestrian network and transportation network

作　　者：王庆山[1] 尹章才[1] 段茜瑶[1] 

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070

出　　处：《测绘科学》2014年第4期123-125,共3页Science of Surveying and Mapping

基　　金：国家自然科学基金面上项目(41071283);中央高校基本科研业务费专项资金项目(2012-IV-097;2011-IV-094);武汉理工大学国家级大学生创新创业训练计划(20121049708007)

摘　　要：基于单一交通网的传统等时线算法具有较大的误差,为此本文提出了一种新的考虑步行网络的等时线算法。该算法的核心是构建交通网与虚拟步行格网相结合的通行网络,利用空间插值和空间分析原理生成基于栅格的时间成本分布图,并提取等时线。实验表明:本文提出的算法较传统等时线方法精度高。The existing isochrone algorithm solely depends on the transportation network which produces large errors. This paper presented an new isochrone algorithm by taking pedestrian network into consideration. Based on the combination of transportation network and pedestrian network, this algorithm created the isochrone with the spatial interpolation and spatial analysis theory. The experimental results showed that the isochrone algorithm would have a higher precision than the conventional method.

关 键 词：等时线 步行格网 最短路径 时间距离 

分 类 号：P208[天文地球—地图制图学与地理信息工程]