【摘要】 设计并实现了交通安全信息主动推送系统,根据车辆位置,通过手机终端将高速公路上的道路交通安全信息主动推送给驾驶员。为满足推送需求设计并实现了一种基于地图投影的兴趣点(Point of Interest,POI)检索算法。首先分析了基于位置服务(Location Based Service,LBS)云检索的工作模式,在此基础上提出一种G_Cell算法,该算法利用高斯投影原理将地图网格化,实现了一种基于位置服务的POI检索算法。实验结果表明:所提出的G_Cell算法比直接计算两点之间的距离算法更稳定、有效。更多还原

【Abstract】 A Traffic Safety Message Pushing System was designed to push traffic safety information on the highways to the drivers through the terminal,based on the location of the vehicle.In order to push the information efficiently,POI(Point of Interest)searching algorithm based on map projection to the system were designed and applied.In the thesis,the work patterns of LBS(Location Based Service)cloud retrieval was analyzed firstly,and an algorithm of G_Cell was proposed based on the analysis.An LBS-Basing POI was achieved based on the map meshed by Gauss projection.The experiment results show that the proposed G_Cell algorithm is stable and effective than the direct calculation of the distance between two points.更多还原