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Countersniper system for urban warfare
Ákos Lédeczi, András Nádas, Péter Völgyesi, György Balogh, Branislav Kusy, János Sallai, Gábor Pap, Sebestyén Dóra, Károly Molnár, Miklós Maróti, Gyula Simon
An ad-hoc wireless sensor network-based system is presented that detects and accurately locates shooters even in urban environments. The localization accuracy of the system in open terrain is competitive with that of existing centralized...
Energy-conserving data cache placement in sensor networks
K. Shashi Prabh, Tarek F. Abdelzaher
Wireless sensor networks hold a very promising future. The nodes of wireless sensor networks (WSN) have a small energy supply and limited bandwidth available. Since radio communication is expensive in terms of energy consumption, the nodes typically...
Improving key predistribution with deployment knowledge in static sensor networks
Donggang Liu, Peng Ning
Pairwise key establishment is a fundamental security service for sensor networks. However, establishing pairwise keys in sensor networks is a challenging problem, particularly due to the resource constraints on sensor nodes and the threat of node...
FAR: Face-aware routing for mobicast in large-scale sensor networks
Qingfeng Huang, Sangeeta Bhattacharya, Chenyang Lu, Gruia-Catalin Roman
This article presents FAR, a Face-Aware Routing protocol for mobicast---a spatiotemporal variant of multicast tailored for sensor networks with environmental mobility. FAR features face-routing and timed-forwarding for delivering a message to a...
On the upper bound of α-lifetime for large sensor networks
Honghai Zhang, Jennifer C. Hou
In this article, we explore the fundamental limits of sensor network lifetime that all algorithms can possibly achieve. Specifically, under the assumptions that nodes are deployed as a Poisson point process with density λ in a square region...
On the optimal distribution of sensors in a random field
Xin Zhang, Stephen B. Wicker
This article considers the problem of distributing sensors to observe a random field while meeting a series of energy and coverage constraints. In the network under consideration, N identical sensors are to be distributed, with each sensor...