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VANET Coverage Analysis for GPS Augmentation Data in Rural Area

机译：农村GPS增强数据的VANET覆盖分析。

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Abstract: Enhanced position accuracy is key for modern navigation systems, location based services and applications based on Inter-Vehicle Communication (IVC). Position data are the foundation for deriving vehicle trajectories used for assessing a situation’s criticality in vehicle safety. Thus, especially Advanced Driver Assistance Systems (ADASs) and integral safety applications benefit from nearby vehicles spreading their positions periodically with high accuracy. Positioning based on Global Navigation Satellite System (GNSS) measurements can be enhanced by established Cooperative Positioning (CP) methods like Real-Time Kinematic (RTK) and Differential GNSS (DGNSS). Conventional CP relies on positioning correction data from a third party, whereas this paper introduces a self-sufficient CP system based on Precise Point Positioning (PPP) and Vehicular Ad-Hoc Network (VANET) technology requiring no infrastructure. Furthermore, the data dissemination process and achievable coverage are analysed by a simulation study for a rural area in Bavaria, Germany. For this purpose, the simulation employs the European IVC protocol stack ITS-G5. While the general feasibility of this CP approach could be assured, some remaining issues regarding employed network protocols were discovered as well.
机译：摘要：增强的位置精度对于现代导航系统，基于位置的服务和基于车间通信（IVC）的应用至关重要。位置数据是得出用于评估局势对车辆安全的严重性的车辆轨迹的基础。因此，特别是高级驾驶员辅助系统（ADAS）和整体安全性应用受益于附近车辆定期以高精度分布其位置。可以通过已建立的协作定位（CP）方法（如实时运动学（RTK）和差分GNSS（DGNSS））来增强基于全球导航卫星系统（GNSS）测量的定位。传统的CP依靠来自第三方的定位校正数据，而本文介绍了一种基于精确点定位（PPP）和不需要专门基础设施的车载专用网络（VANET）技术的自给自足的CP系统。此外，通过对德国巴伐利亚州农村地区的模拟研究，分析了数据分发过程和可实现的覆盖范围。为此，仿真使用了欧洲IVC协议栈ITS-G5。尽管可以确保这种CP方法的一般可行性，但也发现了有关所用网络协议的一些剩余问题。

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