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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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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：增强的位置准确性是现代导航系统，基于位置的服务和基于车辆通信（IVC）的应用的关键。位置数据是用于推导用于评估车辆安全性界定的车辆轨迹的基础。因此，特别是先进的驾驶员辅助系统（ADASS）和整体安全应用受益于附近的车辆，这些车辆在高精度地定期传播其位置。基于全局导航卫星系统（GNSS）测量的定位可以通过建立的协作定位（CP）方法，如实时运动（RTK）和差分GNSS（DGNS）。常规CP依赖于来自第三方的定位校正数据，而本文介绍了基于精确点定位（PPP）和车辆临时网络（VANET）技术的自给式CP系统，要求不需要基础设施。此外，通过对德国巴伐利亚巴伐利亚州农村地区的模拟研究分析了数据传播过程和可实现的覆盖。为此目的，仿真采用欧洲IVC协议堆栈ITS-G5。虽然可以保证本CP方法的一般可行性，但也发现了一些关于采用网络协议的剩余问题。

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