| 最小二乘拟合法确定行程时间 |
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| 引用本文： | 杨少辉,王殿海,王英平,董斌. 最小二乘拟合法确定行程时间[J]. 公路交通科技, 2006, 23(9): 90-93 |
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| 作者姓名： | 杨少辉 王殿海 王英平 董斌 |
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| 作者单位： | 吉林大学,交通学院,吉林,长春,130022 |
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| 基金项目： | 国家自然科学基金重点资助项目(50338030)，博士点基金资助项目(20020183033)，高等学校优先秀青年教师教学科研奖励计划资助项目(357) |
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| 摘 要： | 根据数值计算方法的研究成果,提出了一种新的行程时间确定方法——最小二乘拟合法,即利用最小二乘拟合原理,以两调查地点的流量偏差平方和最小为目标来确定两调查地点间的行程时间。利用北京快速路系统调查数据检验了该方法的实际效果,分析了该方法的适用性:该方法适用于交通流比较稳定或者变化比较均匀的状态。最后在综合对比分析各种行程时间调查方法的基础上,对定点调查确定行程时间应采取的方法给出了具体的建议。
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| 关 键 词： | 交通工程 行程时间 最小二乘拟合法 交通调查 |
| 文章编号： | 1002-0268(2006)09-0090-04 |
| 收稿时间： | 2005-05-17 |
| 修稿时间： | 2005-05-17 |
Fitting Travel Time by Least Square Method |
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| YANG Shao-hui,WANG Dian-hai,WANG Ying-ping,DONG Bin. Fitting Travel Time by Least Square Method[J]. Journal of Highway and Transportation Research and Development, 2006, 23(9): 90-93 |
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| Authors: | YANG Shao-hui WANG Dian-hai WANG Ying-ping DONG Bin |
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| Affiliation: | Transportation College, Jilin University, Jilin Changehun 130022, China |
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| Abstract: | On the base of research results about numerical calculation,a new method: least square method fit is put forward.According to the least-square principle,the time difference,which minimizes the sum of squares of deviations between the flow volumes obtained at two traffic survey stations become the least,is just the travel time between the two traffic survey stations.By applying the field data from the expressway in Beijing,the new method is verified and its application conditions are analyzed.The method is suitable for the conditions that the traffic stream runs stably or changes evenly.With an overall comparison of the different the traffic survey methods for calculating travel time,some proposals are made for the fixed spot survey. |
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| Keywords: | traffic engineering travel time least square method fit traffic survey |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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