摘要
针对目前基于GPS浮动车交通信息采集技术的研究大多只是涉及宏观方案,细节研究较少,导致产生所得交通信息质量不高的问题,考虑数据用户需求以及路网空间数据的特点设计了自然路段划分方法,同时结合动态GPS数据与路网空间数据的特点提出了路段行程时间估计算法。利用编程语言完成了算法实现,并且利用实测数据进行了算法验证。结果表明,自然路段行程时间估计算法不仅运行高效、稳定,同时获取的路段行程时间数据精度较高。
According to the problem of poor quality of traffic information acquired, caused by being lack of researches in detail about traffic information collection technology based on GPS equipped floating car,a method for dividing physical links is designed considering the user requirement and characteristics of road network spatial data ,and an algorithm for estimating link travel time is put forward considering the characteristics of GPS data and road network data. The algorithm is verified through the programming language with measured data. The results show that the algorithm mentioned above runs efficiently and steadily,and produces more accurate link travel time.
出处
《公路》
北大核心
2009年第11期87-90,共4页
Highway
基金
国家高技术研究发展(863)计划
项目编号2007AA12Z242
2007AA11Z245
高校博士点基金
项目编号20070183129
关键词
交通信息采集
浮动车
自然路段
行程时间
traffic information collection
floating car
physical link
travel time
