基于gis的铁路沿线噪声预测模拟系统

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1、基于GIS的铁路沿线噪声预测模拟系统4.2国内普遍使用的噪声分类.................................................264.2.1轮轨噪声.............................................................274.2.2集电系统噪声.........................................................274.2.3空气动力噪声.........................................................274

2、.2.4基础建筑物噪声源.....................................................274.2.5其他机械噪声.........................................................274.3基本噪声预测模式.......................................................274.3.1单发暴露声级.........................................................284.3.2参数计算............

3、.................................................284.3.3方法评述.............................................................354.4本章小结...............................................................36第5章点线结合模式的确定..................................................375.1点线结合模式............................

4、...............................375.2噪声源选择.............................................................375.2.1对比.................................................................375.2.2本文采用噪声声源解析.................................................385.3基本噪声预测模式.........................................

5、..............385.4本章小结...............................................................40第6章铁路噪声预测系统的实现..............................................416.1概述...................................................................416.2系统设计的语言.........................................................416.2

6、.1VB.NET...............................................................416.2.2ARCGIS...............................................................426.3系统设计流程...........................................................426.4系统设计的解析.........................................................426.4.1系统详

7、述.............................................................426.4.2系统实现技术.........................................................466.5实例...................................................................516.5.1GIS空间数据库形成.