Node position discovery in wireless sensor networks

M. O. Ergin, A. Wolisz
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引用次数: 3

Abstract

Wireless sensor networks (WSN) have gained a significant attention in research and carry the promise to be helpful in numerous aspects of life. For many applications, the location information of the nodes needs to be known. As this information is not necessarily available, there is a huge interest in algorithms estimating the positions of individual nodes. The precision and computational complexity of such “localization” algorithms is still a big issue. However, there are cases where the nodes are placed in one of a few possible predetermined positions. In those cases, computing the relative positions of nodes in relation to each other might be sufficient to determine their real positions. In this study, we introduce a methodology for discovering the sequence of nodes in a unidimensional configuration using the measured Received Signal Strength(RSS) values and allowance of frequency diversity of high frequency radio (CC2420) that is frequently used in wireless sensor networks. In the reported experimental tests, we were able to determine the node sequence correctly for the nodes that are as close as 50cm to each other, using the developed methodology.
无线传感器网络中的节点位置发现
无线传感器网络(WSN)在研究中得到了极大的关注,并有望在生活的许多方面发挥作用。对于许多应用程序,需要知道节点的位置信息。由于这些信息不一定可用,因此对估计单个节点位置的算法非常感兴趣。这种“定位”算法的精度和计算复杂度仍然是一个大问题。然而,在某些情况下,节点被放置在几个可能的预定位置之一。在这些情况下,计算节点之间的相对位置可能足以确定它们的实际位置。在本研究中,我们介绍了一种方法,利用测量的接收信号强度(RSS)值和高频无线电(CC2420)的频率分集,在无线传感器网络中经常使用,来发现一维配置中的节点序列。在报告的实验测试中,我们能够使用开发的方法正确地确定彼此接近50cm的节点的节点序列。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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