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The Scientific World Journal
Volume 2014, Article ID 145306, 10 pages
http://dx.doi.org/10.1155/2014/145306
Research Article

Cooperative Search and Rescue with Artificial Fishes Based on Fish-Swarm Algorithm for Underwater Wireless Sensor Networks

Computer Department, Nanjing University of Science and Technology, Jiangsu 210094, China

Received 23 December 2013; Accepted 29 January 2014; Published 5 March 2014

Academic Editors: Y. Mao, X. Meng, and Z. Zhou

Copyright © 2014 Wei Zhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents a searching control approach for cooperating mobile sensor networks. We use a density function to represent the frequency of distress signals issued by victims. The mobile nodes’ moving in mission space is similar to the behaviors of fish-swarm in water. So, we take the mobile node as artificial fish node and define its operations by a probabilistic model over a limited range. A fish-swarm based algorithm is designed requiring local information at each fish node and maximizing the joint detection probabilities of distress signals. Optimization of formation is also considered for the searching control approach and is optimized by fish-swarm algorithm. Simulation results include two schemes: preset route and random walks, and it is showed that the control scheme has adaptive and effective properties.