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To solve the problem that the localization accuracy of centroid algorithm depends heavily on the anchor density, an improved centroid algorithm based on possible position set is proposed. Firstly, the unknown node uses centroid algorithm to obtain a square region and then searches its possible position set in the square region. Finally, the centroid of all possible positions is the estimated coordinate...
Wireless sensor networks (WSNs) have been widely used for monitoring applications. However, due to the rigorous deployment environment, reliable operation of WSNs is difficult to guarantee. Thus, the assurance of WSN reliability should be concerned in order to measure physical quantities correctly and effectively, as well as to maximize the lifetime of the system. In this paper, concerns of WSN reliability...
Due to the operational demands and requirements diversity in wireless sensor networks (WSNs), great improvements in the software engineering process are required. As WSNs increasingly become essential, even critical, components in systems-of-systems (SoSs), the case for verification in the development process is strong. In this position paper we present our vision for a principled formal software...
We introduced the localization algorithm to find the coordinates of nodes in WSN. The proposed algorithm starts at measuring the angle and distance at the landmark and their neighbors and then finding their azimuths and incident angles. In this paper, four kinds of the method to calculate and update the coordinates of nodes are proposed. The simulation results show that to utilize more data obtained...
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