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AUTO-COLLISION AVOIDANCE SYSTEM USING DGPS

机译:使用DGPS的自动防撞系统

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Recent advancements in forward and rear-end collision avoidance systems incorporate radar or cameras for detecting an eminent collision [Andreone, L., Tango, F., Scheunert, U., Cramer, H., Wanielik, G., and Amditis, A.,"A new driving supporting system, integrating infrared camera and an anti-collision micro-wave radar: the EULIDE project", Intelligent Vehicle Symposim, 2002. IEEE, Volume:2, 17-21 June 2002, Pages:519-526.]. Both technologies require a Line Of Sight (LOS) between vehicles for proper collision detection. Thus, they are not effective in detecting possible collisions at intersections where LOS does not exist. This paper presents an Auto-Collision Avoidance System (ACAS) design that uses both a real-time augmented Global Positioning System (GPS) and vehicle-to-vehicle radio frequency (RF) communication system. The RF link allows vehicles to cooperatively share critical information among each other with or without LOS, thus allowing ACAS to detect and avoid collisions at intersections. The paper also analyzes the vehicle current and future position estimation errors, as well as overall system performance. A first-order vehicle motion differential equation was used to estimate future positions. The analysis results indicate that the error is normally distributed and the estimated position error grows along the track and across the track. Several sources of error contribute to the overall estimation error, mainly errors due to GPS, RF communication latency, and the first-order model used for future position estimation.
机译:前后避撞系统的最新进展包括用于检测重大碰撞的雷达或摄像机[Andreone,L.,Tango,F.,Scheunert,U.,Cramer,H.,Wanielik,G.和Amditis,A ,“结合红外摄像头和防撞微波雷达的新型驾驶辅助系统:EULIDE项目”,《智能汽车研讨会》,2002年。IEEE,第2卷,2002年6月17-21日,页数:519-526 。]。两种技术都需要车辆之间的视线(LOS)才能正确检测碰撞。因此,它们在检测不存在LOS的交叉口处可能发生的碰撞中无效。本文提出了一种自动防撞系统(ACAS)设计,该设计同时使用了实时增强型全球定位系统(GPS)和车对车射频(RF)通信系统。 RF链接允许车辆在有或没有LOS的情况下相互协作共享关键信息,从而使ACAS能够检测并避免在交叉路口发生碰撞。本文还分析了车辆当前和未来的位置估计误差,以及整体系统性能。一阶车辆运动微分方程用于估计未来位置。分析结果表明,该误差是正态分布的,并且估计的位置误差沿轨道和整个轨道都在增长。几种误差源造成了总体估计误差,主要是由于GPS,RF通信等待时间以及用于未来位置估计的一阶模型造成的误差。

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