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The positioning technology is one of the most important technologies in the wireless sensor network. The paper describes the current international positioning on several existing technologies, including the based ranging RSSI, TOA, TDOA, etc. and non-centroid algorithm based on distance, Amorphous algorithm, APIT algorithm and so on. Dv_Hop algorithm is a distributed localization algorithm based on...
Recent technological developments in Micro-ElectroMechanical System (MEMS) and communication system have made the wireless sensor networks (WSNs) with emerging applications. Localization is the essential research problem in WSNs. In this paper, I have projected Received Signal Strength Indicator (RSSI) and improved Distance vector (DV) localization algorithms for accurate position estimation. The...
Most of the present localization algorithms based on manifold learning in wireless sensor networks get the estimated sensor locations by using one neighborhood parameter. These algorithms are sensitive to the neighborhood parameter, and can not guarantee that the selected parameter of the neighborhood is optimal. To overcome this shortcoming, this paper proposes the robust localization method based...
The localization principle and error source of DV-Hop algorithm which is classic self-localization algorithm in wireless network are introduced in this paper. Aiming at the disadvantage of DV-Hop algorithm on localization accuracy, an improved scheme by modifying the average hop distance is proposed. The simulation results show that the comprehensive properties of the improved algorithm (including...
With the proliferation of location dependent applications in sensor networks, localization awareness becomes an essential capability of sensor nodes. Many localization algorithms have been proposed in recent years, in which DV-Hop is the most popular one. Intrinsically, localization is an optimization problem based on various distance/path measures. GA and SA are both widely used approaches toward...
Localization of sensor nodes is one of the key issues in wireless sensor networks. It is a precondition for a variety of scenarios as well as geographic clustering and routing. A simple approach for coarse grained localization is weighted centroid localization (WCL), which, unfortunately, comes with some drawbacks. Therefore, we present the "Adaptive WCL" (AWCL) algorithm that outperforms...
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