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Accurate, distributed localization algorithms are needed for large scale dense wireless sensor network applications. The Nelder-Mead Simplex Optimization Method (SOM) is applied to solve nondifferentiable problems and can often handle high discontinuity, particularly if it does not occur near the solution. This article proposes a distributed iterative multilateral algorithm. It formulates a function...
Wireless sensor networks (WSNs) have promised us a new monitoring and controlling model over the distributed computing environment. Network management in WSNs becomes extremely important and vital in order to keep the whole network and application work properly. This paper summarizes the uniqueness of network management protocol for WSN, provide an overview analysis of several current existed protocols,...
In many applications of wireless sensor networks, location is very important data. Location data can come from manual setting or GPS device. However, manual setting requires huge cost of human time, and GPS setting requires expensive device cost. Both approaches are not applicable to localization task of large scale wireless sensor networks. In this paper, we propose an accurate and efficient localization...
Wireless sensor networks (WSNs) have promised us a new monitor and control model over the distributed computing environment. In general, these networks consist of a large number of sensor nodes densely distributed over the region of interest for collecting information or monitor & track certain specific phenomena from the physical environment. Network management in WSNs becomes extremely important...
Sensor scheduling for target tracking in a sensor network is a research hotspot for its effectiveness in improving performance of the network. If numbers of targets and sensors are very large, the scale of the problem may be too large to solve using traditional methods. A method based on modified particle swarm optimization algorithm (MPSO) is proposed to solve the problem. Firstly, extended Kalman...
Recent advances in wireless sensor network and GPS have made constantly-evolving data a new type of data which bring new challenge for the data processing methods. Data broadcasting is an effective means for data dissemination in an asymmetric communication network, like wireless network. Definition of the mean uncertainty ratio of data is presented and an on-line broadcasting scheme CEDB is proposed...
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