A Cooperative Positioning Scheme Based on Beam-Forming for Intelligent Transportation Systems

Abstract:

Cooperative positioning (CP) originating in wireless sensor networks (WSN) is expected to enhance the accuracy of real-time positioning by exchanging location related information in vehicular network via wireless communication. A novel CP system based on beam-forming for vehicular networks is proposed by this work. Its application includes several roadside units equipped with a kind of transceiver based on an special dual-transmitter outphasing architecture which are utilized to broadcast the spatial directivity and correct receive angle information to vehicles with onboard wireless communication units in desired areas. The goal of enhancement positioning via vehicle-to-infrastructure communication can be acquired by a data fusion means based on the extended Kalman filter when GNSS is available and a cooperative solution based on the least-squares method under the condition that the global navigation satellite system (GNSS) is available respectively. The main process of positioning and all the key technical points of the system's application are modeled and analyzed mathematically. And the results of computer simulation confirm the technical practicability for the proposed method.

• Periodical: Advanced Materials Research (Volumes 945-949)
• Pages: 3255-3259
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.945-949.3255
• Online since: June 2014
• Authors: Lei Du*, Nan Liu, Rui Fang, Nan Li, Xiang Hui Song
• Keywords: Beam-Forming, Cooperative Intelligent Transportation System, Cooperative Positioning, Extended Kalman Flter (EKF)

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