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This paper addresses the problem of engineering energy-efficient target detection applications using unattended Wireless Sensor Networks (WSNs) for long-lasting surveillance of areas of interest. As battery energy depletion is an issue in this context, an approach consists of switching on and off sensing and communication modules of wireless sensors according to duty cycles. Making these modules work in an intermittent fashion impacts the latency of notification transmission (depending on the communication duty cycle) and the probability of missed target detection (depending on the number of deployed nodes and the sensing duty cycle).
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