Title :
A hybrid localization method in wireless sensor networks
Author :
Liu, Lichuan ; Jiang, Zaihan
Author_Institution :
Dept. of Electr. Eng., Northern Illinois Univ., DeKalb, IL, USA
Abstract :
In wireless sensor networks (WSN), location information acquisition is critical to guarantee their performance. This paper presents a hybrid positioning method in WSN with high precision. Reference nodes transmit linear frequency modulation continuous wave (FMCW), general nodes estimate the range difference to reference nodes based on the received signals´ frequency difference. The location information can be obtained by combining the Fang´s analytical algorithm and Taylor iteration method. The simulation results prove that the new method enjoys high precision and moderate computational complexity.
Keywords :
computational complexity; frequency modulation; iterative methods; sensor placement; time-of-arrival estimation; wireless sensor networks; FMCW technique; Fang analytical algorithm; TFDA positioning method; Taylor iteration method; WSN; computational complexity; frequency modulation continuous wave technique; hybrid localization method; location information acquisition; time frequency difference of arrival positioning method; wireless sensor networks; Computational complexity; Equations; Global Positioning System; Iterative methods; Mathematical model; Wireless sensor networks; Wireless sensor networks; hybrid method; location; time frequency difference arrival;
Conference_Titel :
Networking, Sensing and Control (ICNSC), 2011 IEEE International Conference on
Conference_Location :
Delft
Print_ISBN :
978-1-4244-9570-2
DOI :
10.1109/ICNSC.2011.5874956
