Error control in distributed node self-localization
Error control in distributed node self-localization
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DOI：
10.1155/2008/162587
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发表时间：
2008-01-01
影响因子：
1.9
通讯作者：
Zhang, Ying
中科院分区：
文献类型：
--
作者：
Liu, Juan;Zhang, Ying
在一个ad hoc传感器网络中，节点的位置信息是必不可少的许多任务，如路由，协作感知，服务交付。分布式节点自定位是轻量级的，需要很少的通信开销，但往往遭受错误传播的不利影响。与其他定位论文，专注于设计精心的定位算法，本文采取了不同的角度，专注于错误传播问题，解决问题，如定位误差来自哪里，它是如何从节点传播到节点。为了防止错误的传播和积累，我们开发了一个错误控制机制的基础上表征节点的不确定性和相邻节点之间的歧视。错误控制机制仅使用本地知识，并且是完全分散的。仿真结果表明，主动选择策略显着减轻了距离和方向传感器的误差传播的影响。它大大提高了定位精度和鲁棒性。版权所有（C）2008 J. Liu和Y.张某
Location information of nodes in an ad hoc sensor network is essential to many tasks such as routing, cooperative sensing, and service delivery. Distributed node self-localization is lightweight and requires little communication overhead, but often suffers from the adverse effects of error propagation. Unlike other localization papers which focus on designing elaborate localization algorithms, this paper takes a different perspective, focusing on the error propagation problem, addressing questions such as where localization error comes from and how it propagates from node to node. To prevent error from propagating and accumulating, we develop an error-control mechanism based on characterization of node uncertainties and discrimination between neighboring nodes. The error-control mechanism uses only local knowledge and is fully decentralized. Simulation results have shown that the active selection strategy significantly mitigates the effect of error propagation for both range and directional sensors. It greatly improves localization accuracy and robustness. Copyright (C) 2008 J. Liu and Y. Zhang.