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Vol. 158, Issue 11, November 2013, pp. 76-81




An Improved Localization Algorithm in WSN Based on Nodes Distribution Law and Revised Hop-Size of DV-Hop
Xin FENG, Zhuang LIU, Xin DING, Su Peng SUN

School of Computer Science and Technology, Changchun University of Science and Technology, Changchun, 130022, China
E-mail: fengxin@cust.edu.cn, LiuZhuang@cust.edu.cn, Dingxin@cust.edu.cn, Sunsupen@cust.edu.cn


Received: 19 August 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems


Abstract: In this paper, a new law is found in DV-Hop which is a classic algorithm based on range-free localization algorithm in WSN (Wireless Sensor Networks).There are stable distribution rules in both the locations of the unknown nodes with similar localization error and the locations of the beacon nodes with similar hop-size. Based on this law, the analytical reason is given and an improved localization algorithm is proposed to enhance the localization accuracy. The main idea is revising the hop-size according to the law and applying appropriate algorithm according to the location of the monitor area. The simulation experiments show that the new algorithm can improve the localization accuracy efficiently.


Keywords: Wireless sensor networks, DV-Hop, Localization accuracy, Hop-size, Nodes distribution law.


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