节点文献
基于路段覆盖率的浮动车样本数量研究
Study on the density of floating car based on the route coverage
【摘要】 作为智能交通系统(ITS)的重要组成部分,浮动车技术得到了广泛的应用,而浮动车样本数量与路段覆盖率以及抽样时间段之间的关系又是在应用中必须解决的问题.通过对现有理论的研究,在考虑到GPS定位误差的情况下,推导出了3者之间的理论关系式,并与所获取的成渝高速成渝段的实际数据进行对比拟和,从而证实了理论公式的可行性.
【Abstract】 As an important part of intelligent transportation system(ITS),the technology of floating car has been used widely.In practice,the relationship among the density of the floating cars,the line coverage and update cycle of sampling must be discussed theoretically.Under researching the exsisting theory and considering the location error of GPS,the relationship has been formulated.At the same time,the theoretical formula is validated by using the practical data from the ChengYu freeway.
【关键词】 浮动车;
最小样本数量;
路段覆盖率;
采样效率;
【Key words】 floating car; minimum samples; route coverage; sampling efficiency;
【Key words】 floating car; minimum samples; route coverage; sampling efficiency;
- 【文献出处】 山东理工大学学报(自然科学版) ,Journal of Shandong University of Technology(Science and Technology) , 编辑部邮箱 ,2006年03期
- 【分类号】U495
- 【被引频次】33
- 【下载频次】340