Journal
JOURNAL OF AMBIENT INTELLIGENCE AND HUMANIZED COMPUTING
Volume 11, Issue 7, Pages 2871-2882Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s12652-019-01406-y
Keywords
Wireless sensor networks; Mobile anchor node; Localization; Path planning
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Obtaining the accurate location of the sensor nodes, which is known as the localization algorithm, is considered a significant issue in various applications of wireless sensor networks (WSNs). The present study introduced two anchor-based localization algorithms, namely, H-V scan and diagonal localization. These two algorithms are based on the received signal strength indicator (RSSI) and connectivity information, respectively. In addition, the diagonal algorithm relies on a diagonal trajectory in which the accuracy is improved while the consumed energy and localization time are decreased. Further, the H-V scan method benefits from collinearity and thus the location of the nodes is determined by the collinear position packets. Therefore, RWP, circle, LMAT, Z-curve, and H-curve methods, along with the proposed methods by Inet package of Omnetpp simulator were implemented for a fair comparison. The results indicated that in diagonal method accuracy improves about 1.2 times and consumed energy and localization time decrease about 65% compare to the best results of all the related studies. Furthermore, the results confirmed that the H-V scan which uses from collinearity concept, increases the accuracy about eight times.
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