Android的定位技术得到普遍应用,而基于位置的服务(Location Based Services,LBS)是移动互联网络发展趋势中最重要的应用,LBS中就使用了Android中的相关定位技术实现其综合应用。基于A-GPS和Wi Fi定位的混合定位方案更是有效地改进了定...Android的定位技术得到普遍应用,而基于位置的服务(Location Based Services,LBS)是移动互联网络发展趋势中最重要的应用,LBS中就使用了Android中的相关定位技术实现其综合应用。基于A-GPS和Wi Fi定位的混合定位方案更是有效地改进了定位系统的性能,同时对定位精度也有进一步的保障。展开更多
This paper presents a microscopic traffic simulation-based method for urban traffic state estimation using Assisted Global Positioning System (A-GPS) mobile phones. In this approach, real-time location data are collec...This paper presents a microscopic traffic simulation-based method for urban traffic state estimation using Assisted Global Positioning System (A-GPS) mobile phones. In this approach, real-time location data are collected by A-GPS mobile phones to track vehicles traveling on urban roads. In addition, tracking data obtained from individual mobile probes are aggregated to provide estimations of average road link speeds along rolling time periods. Moreover, the estimated average speeds are classified to different traffic condition levels, which are prepared for displaying a real-time traffic map on mobile phones. Simulation results demonstrate the effectiveness of the proposed method, which are fundamental for the subsequent development of a system demonstrator.展开更多
文摘Android的定位技术得到普遍应用,而基于位置的服务(Location Based Services,LBS)是移动互联网络发展趋势中最重要的应用,LBS中就使用了Android中的相关定位技术实现其综合应用。基于A-GPS和Wi Fi定位的混合定位方案更是有效地改进了定位系统的性能,同时对定位精度也有进一步的保障。
文摘This paper presents a microscopic traffic simulation-based method for urban traffic state estimation using Assisted Global Positioning System (A-GPS) mobile phones. In this approach, real-time location data are collected by A-GPS mobile phones to track vehicles traveling on urban roads. In addition, tracking data obtained from individual mobile probes are aggregated to provide estimations of average road link speeds along rolling time periods. Moreover, the estimated average speeds are classified to different traffic condition levels, which are prepared for displaying a real-time traffic map on mobile phones. Simulation results demonstrate the effectiveness of the proposed method, which are fundamental for the subsequent development of a system demonstrator.
