Unsupervised anomaly detection in underwater acoustic sensor networks

Issue title: Soft Computing and Intelligent Systems: Techniques and Applications

Guest editors: Sabu M. Thampi and El-Sayed M. El-Alfy

Article type: Research Article

Authors: Das, Anjana P.^{a; *} | Thampi, Sabu M.^b

Affiliations: [a] TATA ELXSI Ltd, Trivandrum, India | [b] Indian Institute of Information Technology and Management-Kerala, India

Correspondence: [*] Corresponding author. Anjana P. Das, E-mail: anjanapdas@gmail.com.

Abstract:  An underwater acoustic sensor network (UASN) offers a promising solution for the exploration of underwater resources remotely. As the UASN acoustic channel is open and the environment is hostile, the risk of malicious activities is very high, particularly in time-critical military applications. In this paper, we propose an unsupervised anomaly detection system by learning the social behavioral correlation among nodes. The location data retrieved from sensors are learned using long short term memory (LSTM) networks to capture the anomalous nature. The network is simulated by modeling anomalies and analyzed the performance. The analysis of results indicates that the anomaly detection system offers an acceptable accuracy with high true positive rate and F-Score by showing consistency in multiple mobility behavior.

Keywords: Underwater sensor networks, time series analysis, anomaly detection, long shot term memory network

DOI: 10.3233/JIFS-169947

Journal: Journal of Intelligent & Fuzzy Systems, vol. 36, no. 3, pp. 2367-2372, 2019