Title :
A robust ranging-based localization mechanism in wireless sensor networks
Author :
Wu, Xiaofang ; Xu, Yan ; Shi, Haibin ; Shi, Jianghong
Author_Institution :
Sch. of Inf. Sci. & Technol., Xiamen Univ., Xiamen, China
Abstract :
Node Localization plays an important role in the applications of wireless sensor networks (WSNs). The whole localization mechanism of WSN target nodes consists of three key steps, the identification and data exchange step, the range estimation step, and the position estimation step. Based on the RSSI (Received Signal Strength Indication) technology, the BP (Back Propagation)-loss channel model is proposed to approximate the channel transmission characteristic adaptively by resilient gradient descent method. Due to the constraint of low powered, and low cost property of WSN nodes, the concentrative localization algorithm is adopted. The RMIC (RSSI-margin and Improved Chan) algorithm and the optimal anchor nodes library selection scheme are presented to improve the localization accuracy. The simulation results show the performance improvement of the proposed localization mechanism. Range measurement and localization are realized on our WSN nodes, and the experiment data confirm the validity of the mechanism.
Keywords :
backpropagation; gradient methods; telecommunication computing; wireless channels; wireless sensor networks; back propagation-loss channel model; data exchange; library selection scheme; position estimation; range estimation; received signal strength indication; resilient gradient descent method; robust ranging-based concentrative localization mechanism; wireless sensor network; Broadcasting; Costs; Error correction; Information science; Intelligent networks; Libraries; Robustness; Routing; Traffic control; Wireless sensor networks; BP-loss model; RSSI; localization; wireless sensor network;
Conference_Titel :
Anti-counterfeiting, Security, and Identification in Communication, 2009. ASID 2009. 3rd International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3883-9
Electronic_ISBN :
978-1-4244-3884-6
DOI :
10.1109/ICASID.2009.5276960
