Implementation of V2X with the Integration of Network RTK: Challenges and Solutions

Scott Stephenson, Xiaolin Meng, Terry Moore, Anthony Baxendale, Tim Edwards

Abstract:	This paper highlights the major improvement in vehicle localisation that is possible through the adoption of Network Real-Time Kinematic (N-RTK) GNSS positioning, while assessing in detail the real-world challenges that need to be overcome before its implementation. From previous research, it was shown that vehicle positioning with the aid of a Network RTK GNSS receiver was limited by the cell network communication link problems causing degradation of the important correction messages, and GNSS outages typical with GNSS receivers. During a thorough assessment of each of these issues, and tests carried out in the laboratory and real world driving, the extent of the problem is detailed. It is found that the cell network handling the communication of the correction messages is fairly robust, but once the signal strength drops to approximately -100 dBM, message losses and message delays degrade the position solution. The extent of the GNSS signal outage is assessed in a motorway environment with regular overhead obstructions. The average total GNSS outage period is found to be around 1.13 seconds, with an average time of 13.13 seconds to resolve the ambiguity for the Network RTK GNSS solution. These figures are useful in the assessment of complimentary positioning sensors for a ubiquitous positioning system.
Published in:	Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012) September 17 - 21, 2012 Nashville Convention Center, Nashville, Tennessee Nashville, TN
Pages:	1556 - 1567
Cite this article:	Stephenson, Scott, Meng, Xiaolin, Moore, Terry, Baxendale, Anthony, Edwards, Tim, "Implementation of V2X with the Integration of Network RTK: Challenges and Solutions," Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 1556-1567.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In