Real-time Position Estimation of Moving Vehicles using Measuring Devices and GPS

在这项研究中，我们设计并开发了一种利用测量设备和GPS来实时估计移动车辆位置的车载通信协议。作为测量设备，我们假设毫米波雷达提供到邻近车辆的距离，而车载导航系统提供车辆的GPS位置。由于我们不能假设所有车辆都有这样的毫米波雷达和车载导航系统，所以提出的协议假设有毫米波雷达和车载导航系统的车辆估计没有这样装置的车辆的位置，并且有这样的设备的车辆用获得的邻近车辆的位置信息来交换位置信息，并且准确有效地估计所有车辆的位置。我们使用交通模拟器和网络模拟器对它们的有效性进行了评估，讨论了几种毫米波雷达和车载导航系统附着率的位置估计精度与车辆密度的关系。在附着率为30%(附着率为10%，误差为1.4米)的情况下，我们可以估计出移动车辆的实时位置，误差在1米以内。部分研究成果已经在传统的ITS相关国际会议--第74届IEEE车辆技术大会(VTC Fall 2011)上发表。

In this research, we have designed and developed an inter-vehicle communication protocol for estimating positions of moving vehicles in real-time by using measuring devices and GPS. As measuring devices, we assume millimeter wave radars inform the distance to neighboring vehicles and car navigation systems provide GPS positions of vehicles.Since we cannot assume all vehicles have such millimeter wave radars and car navigation systems, the proposed protocol assumes that vehicles with such radars and car navigation systems estimate the positions of vehicles without such devices, and that vehicles with such devices exchange position information for obtained neighboring vehicles and estimate positions of all the vehicles accurately and efficiently.We have evaluated their effectiveness using a traffic simulator and a network simulator together where we are discussing the relation between accuracy of position estimation and vehicular density for several attach rates of millimeter wave radars and car navigation systems. Using the proposed protocol, we can estimate real-time positions of moving vehicles within 1 meter errors even for a case that the attach rate is 30%(1. 4 meter errors for a case that the attach rate is 10%).A part of the research result has been presented at 74th IEEE Vehicular Technology Conference(VTC Fall 2011), which is a traditional ITS related international conference.