Sensor selection schemes for consensus based distributed estimation over energy constrained wireless sensor networks

Sensor selection schemes for consensus based distributed estimation over energy constrained wireless sensor networks
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能量受限无线传感器网络上基于共识的分布式估计的传感器选择方案

DOI:
10.1016/j.neucom.2012.02.011
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发表时间:
2012-06
期刊:
影响因子:
6
通讯作者:
Hongbo, Shi
Hongbo, Shi
中科院分区:
计算机科学2区
文献类型:
--
作者:
Wen, Yang(杨文);Hongbo, Shi

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在无线传感器网络的应用中,传感器节能是提高网络寿命的关键。在本文中,我们考虑的问题,执行共识的估计能量受限的无线传感器网络,其中能量是保守的,只选择一个子集的传感器,以观察在每个时间步的动态系统的状态。首先,我们推导出状态估计协方差收敛的一个充分条件。然后,我们提出了一个传感器选择策略,以最小化状态估计误差的目标下,传感器能量约束的传感器来测量系统的状态下一个步骤。最后,我们提供了一些数值例子来说明所提出的策略的性能和有效性。
In the applications of wireless sensor networks (WSNs), sensor energy saving is essential to increase the life of sensor networks. In this paper, we consider the problem of performing consensus based estimation over energy constrained WSNs, in which energy is conserved by selecting only a subset of sensors to observe the state of the dynamical system at each time step. First, we derive a sufficient condition for the convergence of the state estimation covariance. Then we propose a sensor selection strategy to schedule sensors to measure the system state for next step with the goal of minimizing the state estimation error subject to sensor energy constraint. Finally, we provide some numerical examples to illustrate the performance and effectiveness of the proposed strategy.
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