Bhat, Soumya J and Santhosh, K V (2020) Is Localization of Wireless Sensor Networks in Irregular Fields a Challenge? Wireless Personal Communications, 114. pp. 2017-2042. ISSN 0929-6212

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Abstract

Wireless sensor networks have been considered as an emerging technology for numerous applications of cyber-physical systems. These applications often require the deployment of sensor nodes in various anisotropic felds. Localization in anisotropic felds is a challenge because of the factors such as non-line of sight communications, irregularities of terrains, and network holes. Traditional localization techniques, when applied to anisotropic or irregular felds, result in colossal location estimation errors. To improve location estimations, this paper presents a comparative analysis of available localization techniques based on taxonomy framework. A detailed discussion on the importance of localization of sensor nodes in irregular felds from the reported real-life applications is presented along with challenges faced by existing localization techniques. Further, taxonomy based on techniques adopted by localization methods to address the efects of irregular felds on location estimations is reported. Finally, using the designed taxonomy framework, a comparative analysis of diferent localization techniques addressing irregularities and the directions towards the development of an optimal localization technique is addressed.

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