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Wireless sensor networks coverage is a major concern for many civilian and military applications, including border surveillance and battle field monitoring. The efficiency of these applications mainly depends on accurate and timely event detection and reliable communication. However, this cannot always be achieved due to holes created by obstacles and energy depleted sensor nodes. In this paper, we...
This paper presents the design of a wireless sensor network architecture suitable for monitoring vibration on an aircraft. The main objective is to improve the flight safety by detecting vibration intensity among all the components of the airplane structure and communicating this information to the cockpit computer to react before any component can reach resonance. Therefore, the study of sensor nodes...
In this paper, we propose a landing and a take-off assistance network architecture based on optical wireless technologies combining visible light communication (VLC) and free space optics (FSO). The network is composed of LED sensors that are used to collect information about the state of the runway and relay it using VLC communication to two gateways that will recover the sensed information and transmit...
This paper proposes all-optical wireless sensor network architecture based on visible light communication (VLC) and free space optics (FSO) technologies which targets the monitoring of railways health state to ensure the security of trains traffic. To this purpose, we design a technique for detecting rails vibration using light-based sensor nodes. The detection includes an estimation of the amplitude...
This paper presents a dynamic frequency allocation method which aims at optimizing the spectrum assignment in cognitive wireless sensor networks used for avionic control applications. The main objective is to improve the frequency utilization of the avionic bands by enabling the sensor nodes (i.e. secondary users or SUs) sharing the spectrum with primary avionic systems (i.e. PUs) without disturbing...
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