TOA-based location estimation accuracy for 3D wireless sensor networks

Authors:
Qiao-ling Du;Xiaoying Sun;Rui Ding;Zhi-hong Qian;Shu-xun Wang
Affiliations:
College of Electronic Science and Engineering, University of Jilin, Changchun, China;College of Communication Engineering, University of Jilin, Changchun, China;College of Communication Engineering, University of Jilin, Changchun, China;College of Communication Engineering, University of Jilin, Changchun, China;College of Communication Engineering, University of Jilin, Changchun, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

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Abstract

WSNs are a physical impossibility to be deployed into the area of absolute plane in the context of real-world applications. For all kinds of applications in WSNs accurate location information is crucial. In this article, we focus on 3D location accuracy in WSNs. We quantify the estimation accuracy for the TOA measurements by deriving the Cramer-Rao bound (CRB), and discuss the performance in two application scenarios, 2D WSN and 3D WSN. Matlab simulation indicates that the 3D location accuracy is superior to the 2D location accuracy for WSNs with reference devices and blindfolded devices being deployed randomly.