Meng Cheng, Shen Qian, Muhammad Reza Kahar Aziz
This paper proposes a direction-of-arrival (DOA)-based cooperative positioning system in wireless sensor networks (WSNs), utilizing the factor graph (FG) technique. It aims to deal with the scenario where the anchor nodes, i.e., the sensors, are insufficient, rendering the conventional angle-based schemes unable to provide accurate and unambiguous detection. Specifically, an additional unknown target is incorporated in the FG framework, which is assumed to be capable of forwarding the DOA information obtained from the desired target to the sensors in a cooperative manner. It has been shown that the system performance has been significantly enhanced through target cooperation, in terms of both improved detection accuracy and extended area for reliable service, without requiring additional sensors. The advantages of the proposed system have also been demonstrated compared to other counterpart schemes. © 1967-2012 IEEE.
Shanghai Normal University, Shanghai Engineering Research Center of Intelligent Education and Big Data, College of Information, Mechanical and Electrical Engineering, Shanghai, 200234, China; Tokyo City University, Faculty of Informatics, Department of Information Systems, Tokyo, 158-8557, Japan; Institut Teknologi Sumatera, Center for Intelligent Geolocation and Wireless Communications (iGlowcom), Lampung Selatan, 35365, Indonesia
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