Vehicular communication using the DSRC (Dedicated Short Range Communication) standard is becoming an enabling factor for a wide range of Cooperative Intelligent Transportation System (C-ITS) applications, especially those with high requirements of safety assurance. The location information of connected vehicles is fundamental, and significant for ensuring safe driving and preventing traffic accidents under complex and uncertain conditions. In order to alleviate the drawbacks of GNSS (Global Navigation Satellite System) based positioning due to satellite signal non-availability under difficult environments such as dense urban areas, a hybrid integrity monitoring technique is proposed. The range-rate measurement from the DSRC unit in the vehicle is employed to assist integrity monitoring of observable satellites, and the DSRC measurements are sent to the target vehicle through a vehicle-to-vehicle channel along with the identified state of neighboring vehicles. With the assistance from surrounding neighborhoods and a road map database, a virtual satellite ranging solution is possible to expand the measurements for enabling autonomous GNSS integrity monitoring and fault detection without the limitation of satellite visibility. Simulations conducted with different vehicle operation conditions and GNSS fault models demonstrate that the proposed solution outperforms conventional RAIM (Receiver Autonomous Integrity Monitoring) methods making it promising for many location-based cooperative applications.

使用DSRC（专用短程通信）标准的车辆通信正在成为各种协作式智能运输系统（C-ITS）应用程序的促成因素，尤其是对安全保证有较高要求的应用程序。互联车辆的位置信息是至关重要的，对于确保在复杂和不确定的条件下安全驾驶和预防交通事故具有重要意义。为了减轻由于在困难的环境（例如，密集的市区）中卫星信号不可用而导致的基于GNSS（全球导航卫星系统）的定位的缺点，提出了一种混合完整性监测技术。车辆中DSRC单元的测距率测量用于辅助监视可观测卫星的完整性，DSRC测量值通过车辆到车辆的通道以及识别出的相邻车辆的状态发送到目标车辆。借助周围社区和路线图数据库的帮助，虚拟卫星测距解决方案可以扩展测量范围，以实现自主GNSS完整性监控和故障检测，而不会限制卫星的可视性。在不同的车辆运行条件和GNSS故障模型下进行的仿真表明，所提出的解决方案优于传统的RAIM（接收者自主完整性监控）方法，使其在许多基于位置的协作应用中很有希望。借助周围社区和路线图数据库的帮助，虚拟卫星测距解决方案可以扩展测量范围，以实现自主GNSS完整性监控和故障检测，而不会限制卫星的可视性。在不同的车辆运行条件和GNSS故障模型下进行的仿真表明，所提出的解决方案优于传统的RAIM（接收者自主完整性监控）方法，使其在许多基于位置的协作应用中很有希望。借助周围社区和路线图数据库的帮助，虚拟卫星测距解决方案可以扩展测量范围，以实现自主GNSS完整性监控和故障检测，而不会限制卫星的可视性。在不同的车辆运行条件和GNSS故障模型下进行的仿真表明，所提出的解决方案优于传统的RAIM（接收者自主完整性监控）方法，使其在许多基于位置的协作应用中很有希望。