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A centralized self-localization algorithm is used to estimate sensor locations. From the known positions of at least 3 anchor nodes the remaining sensor positions are estimated using an efficient particle filter (PF) with progressive correction. The measurement model is a simple two-parameter log-normal shadowing model, where the parameters are estimated concurrently. Experiments using Crossbow Imote2...
Wireless sensor networks (WSN) are often applied to monitor the environment such as mine. Due to the rapid attenuation of the wireless signals and the limited power of the WSN nodes, the performances of WSN in these environments are not ideal. In this paper, we present a hybrid radio over fiber wireless sensor network architecture to compensate the weakness of traditional WSN architecture. Considering...
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