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Localization Based on Probabilistic Multilateration Approach for Mobile Wireless Sensor Networks
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DOI：10.1109/ACCESS.2020.2978495.png)
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摘要
En 中文
Localization is one of the main problems in Mobile Wireless Sensor Networks, since it provides the location of an event occurrence. This paper presents a performance evaluation of the localization algorithms: Multilateration Algorithm, Weighted Multilateration Algorithm and Probabilistic Multilateration Algorithm (PMA). In addition, we propose an Improved Probabilistic Multilateration Algorithm that decreases the localization error of the interest node by using an approach that computes iteratively the position of a node of interest until it reaches the solution that minimizes the localization error. The proposed approach regards the noisy environment by its impact on a correlation matrix that involves the variance of the separation distance between the node of interest and the respective reference nodes (RNs). Furthermore, we also introduce a constant parameter called damping factor; which enhances the convergence of the localization algorithm providing the solution that minimizes the localization error. In this study, we evaluate localization algorithms in a single-hop and multi-hop scenarios considering a distribution with solid geometry of the RNs and randomly distributed RNs in both scenarios. The results we obtained show that our proposed algorithm Improved PMA presents a better performance according to the Normalized Root Mean Squared Error varying the number of reference nodes and noise proportion.
Keyword:
Estimation
Probabilistic logic
Wireless sensor networks
Classification algorithms
Syntactics
Global Positioning System
Mobile handsets
MWSNs
reference nodes
NOI
reconfigurable network
ad-hoc networks
localization
mobility patterns
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期刊
IF:
3.6
论文数:
9.8W
被引数:
29.4W
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