The quality of real time traffic information is of the great importance, therefore the factors having effect on traffic characteristics are analyzed in general, and the necessities of real time data processing are sum...The quality of real time traffic information is of the great importance, therefore the factors having effect on traffic characteristics are analyzed in general, and the necessities of real time data processing are summarized. The identification and reconstruction of real time traffic data are analyzed using Kalman filter equation and statistical approach. Four methods for ITS (Intelligent transportation system) detector data screening in traffic management systems are discussed in detail. Meanwhile traffic data examinations are discussed with solutions formulated through analysis, and recommendations are made for information collection and data management in future.展开更多
针对车辆实时调度系统应用中的问题,在探讨可扩展标记语言(XML)数据交换方面优势和分析物流运输企业车辆实时调度系统所需交通数据流的基础上,总结实时交通数据模型,以实现数据无缝交换为目标,从数据交换标准化的角度,基于XML构建了车...针对车辆实时调度系统应用中的问题,在探讨可扩展标记语言(XML)数据交换方面优势和分析物流运输企业车辆实时调度系统所需交通数据流的基础上,总结实时交通数据模型,以实现数据无缝交换为目标,从数据交换标准化的角度,基于XML构建了车辆实时调度系统交通数据描述标记语言(Traffic Data Markup Language)模型,探讨了其定义、数据层次框架,并设计了TDML Schema;最后,应用TDML于城市商用车辆调度系统的实时交通数据交换。展开更多
文摘The quality of real time traffic information is of the great importance, therefore the factors having effect on traffic characteristics are analyzed in general, and the necessities of real time data processing are summarized. The identification and reconstruction of real time traffic data are analyzed using Kalman filter equation and statistical approach. Four methods for ITS (Intelligent transportation system) detector data screening in traffic management systems are discussed in detail. Meanwhile traffic data examinations are discussed with solutions formulated through analysis, and recommendations are made for information collection and data management in future.
文摘针对车辆实时调度系统应用中的问题,在探讨可扩展标记语言(XML)数据交换方面优势和分析物流运输企业车辆实时调度系统所需交通数据流的基础上,总结实时交通数据模型,以实现数据无缝交换为目标,从数据交换标准化的角度,基于XML构建了车辆实时调度系统交通数据描述标记语言(Traffic Data Markup Language)模型,探讨了其定义、数据层次框架,并设计了TDML Schema;最后,应用TDML于城市商用车辆调度系统的实时交通数据交换。