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arXiv 1202.5261cs.DC
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无线传感器网络分布式目标快速跟踪的信念共识算法

Belief Consensus Algorithms for Fast Distributed Target Tracking in Wireless Sensor Networks

Vladimir Savic, Henk Wymeersch, Santiago Zazo

摘要:

在无线传感器网络的分布式目标跟踪中,可以通过通信路径的构建和维护来实现对目标状态的一致性,以便交换关于局部似然函数的信息。这种方法缺乏对故障的鲁棒性,并且不容易适用于ad-hoc网络。为了解决这个问题,已经提出了几种方法,允许通过完全分布式的信念共识(BC)算法,在分布式粒子滤波(DPF)的局部似然协议。然而,尚未进行收敛速度和通信成本的统一比较。在本文中,我们提供了这样的比较,并提出了一种新的BC算法的基础上的信念传播(BP)。根据我们的研究,基于大都会信念共识(MBC)的DPF是最快的循环图,而基于BP共识的DPF是最快的树图。此外,我们发现,基于BC的DPF方法具有较低的通信开销比数据洪泛时,网络是足够稀疏。

英文摘要:

In distributed target tracking for wireless sensor networks, agreement on the target state can be achieved by the construction and maintenance of a communication path, in order to exchange information regarding local likelihood functions. Such an approach lacks robustness to failures and is not easily applicable to ad-hoc networks. To address this, several methods have been proposed that allow agreement on the global likelihood through fully distributed belief consensus (BC) algorithms, operating on local likelihoods in distributed particle filtering (DPF). However, a unified comparison of the convergence speed and communication cost has not been performed. In this paper, we provide such a comparison and propose a novel BC algorithm based on belief propagation (BP). According to our study, DPF based on metropolis belief consensus (MBC) is the fastest in loopy graphs, while DPF based on BP consensus is the fastest in tree graphs. Moreover, we found that BC-based DPF methods have lower communication overhead than data flooding when the network is sufficiently sparse.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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