标题： 车载自组织网络的精确定位系统 显示英文标题

标题： Precise positioning systems for Vehicular Ad-Hoc Networks

摘要： 车载自组织网络（VANET）是一个非常有前景的研究领域，可以提供许多有用和关键的应用，包括安全应用。 大多数这些应用要求每辆车都能实时精确地知道其当前位置。 GPS是VANET中最常用的定位技术。 然而，它并不准确。 此外，GPS信号在隧道、地下或靠近高楼的地方无法接收。 因此，在这些位置无法获得定位服务。 即使差分GPS（DGPS）可以提供高精度，但在这些位置仍然没有GPS收敛。 在本文中，我们提供了适用于VANET的定位技术，可以在GPS信号被障碍物阻碍的区域提供精确的定位服务。 实验结果表明精度有了显著提高。 这使得结合DGPS可以实现连续的高精度定位服务，该服务可以被大多数VANET应用使用。 显示英文摘要

摘要： Vehicular Ad Hoc Networks (VANET) is a very promising research venue that can offers many useful and critical applications including the safety applications. Most of these applications require that each vehicle knows precisely its current position in real time. GPS is the most common positioning technique for VANET. However, it is not accurate. Moreover, the GPS signals cannot be received in the tunnels, undergrounds, or near tall buildings. Thus, no positioning service can be obtained in these locations. Even if the Deferential GPS (DGPS) can provide high accuracy, but still no GPS converge in these locations. In this paper, we provide positioning techniques for VANET that can provide accurate positioning service in the areas where GPS signals are hindered by the obstacles. Experimental results show significant improvement in the accuracy. This allows when combined with DGPS the continuity of a precise positioning service that can be used by most of the VANET applications.