Secure Localization for Underwater Wireless Sensor Networks Based on Probabilistic Approach

The Underwater Wireless Sensor Network (UWSN) is a special class of Wireless Sensor Network (WSN), which is basically deployed inside water bodies for performing the required sensing tasks. Unlike WSN, identifying the location information of the different sensor nodes is a challenging task, mainly due to the signal problems associated with the water medium. Node Localization refers to identifying or estimating the location co-ordinates of the required sensor nodes. Many effective node localization techniques have been proposed in the literature. A new challenge has emerged related to security of the node localization technique, wherein, intruder or compromised sensor nodes provide faulty information for the node localization process. This specialized attack can result in improper node localization, and may result in network disconnection. Currently, effective solution to address this problem in the literature is still lacking. In this work, a secure localization framework based on probabilistic model is presented. This proposed localization framework, substantially outperforms the contemporary framework in-terms of security effectiveness when demonstrated empirically.