An Improved GNSS Receiver Autonomous Integrity Monitoring Method Using Vehicle-to-Vehicle Communication

摘要

The GNSSs (Global Navigation Satellite Systems) positioning-based applications are of great significance to support many loV (Internet of Vehicles) services and implementations. Conventional satellite-based vehicle positioning solutions mainly concern the improvement of precision, continuity and service availability under different scenarios. The integrity monitoring of the satellites should also be considered for many safety-related applications, even under the low-visibility conditions with assistance from additional sensors. In this paper, the cooperative vehicle positioning using DSRC-based vehicle-to-vehicle wireless communication is concentrated to establish a GNSS/DSRC integrated solution within the IoV scheme. And a virtual satellite-based approach is presented to make it possible to realize an improved RAIM (Receiver Autonomous Integrity Monitoring) calculation using redundant DSRC measurements through the cooperation among the vehicles. Thus, results of the improved integrity monitoring can enhance the capability of safe positioning. Simulations with step and ramp pseudo-range measurement errors are carried out to validate performance of the proposed solution, and the results of RAIM availability and the detection identification latency demonstrate the potential of enabling field IoV implementations with critical performance requirements of safety.