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Sensors 2016, 16(2), 209;

An ACOR-Based Multi-Objective WSN Deployment Example for Lunar Surveying

Information and Communications Technologies Department, Technical University of Cartagena (UPCT), Cartagena 30202, Spain
Academic Editor: Leonhard M. Reindl
Received: 29 October 2015 / Accepted: 2 February 2016 / Published: 6 February 2016
(This article belongs to the Section Sensor Networks)
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Wireless sensor networks (WSNs) can gather in situ real data measurements and work unattended for long periods, even in remote, rough places. A critical aspect of WSN design is node placement, as this determines sensing capacities, network connectivity, network lifetime and, in short, the whole operational capabilities of the WSN. This paper proposes and studies a new node placement algorithm that focus on these aspects. As a motivating example, we consider a network designed to describe the distribution of helium-3 (3He), a potential enabling element for fusion reactors, on the Moon. 3He is abundant on the Moon’s surface, and knowledge of its distribution is essential for future harvesting purposes. Previous data are inconclusive, and there is general agreement that on-site measurements, obtained over a long time period, are necessary to better understand the mechanisms involved in the distribution of this element on the Moon. Although a mission of this type is extremely complex, it allows us to illustrate the main challenges involved in a multi-objective WSN placement problem, i.e., selection of optimal observation sites and maximization of the lifetime of the network. To tackle optimization, we use a recent adaptation of the ant colony optimization (ACOR) metaheuristic, extended to continuous domains. Solutions are provided in the form of a Pareto frontier that shows the optimal equilibria. Moreover, we compared our scheme with the four-directional placement (FDP) heuristic, which was outperformed in all cases. View Full-Text
Keywords: WSN; deployment; multi-objective; ACO; optimization; moon WSN; deployment; multi-objective; ACO; optimization; moon

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López-Matencio, P. An ACOR-Based Multi-Objective WSN Deployment Example for Lunar Surveying. Sensors 2016, 16, 209.

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