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arXiv 1208.1111cs.ITmath.IT
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基于凸优化的分布式传感器选择策略

Strategies for Distributed Sensor Selection Using Convex Optimization

Fabian Altenbach, Steven Corroy, Georg Böcherer, Rudolf Mathar

摘要:

考虑线性测量模型中未知参数向量的估计。集中式传感器选择包括从总共m个潜在测量中选择一组k_s个传感器测量。相应选择的性能通过估计误差协方差矩阵的体积来测量。在这项工作中,我们考虑的问题,选择这些传感器在一个分布式或分散的方式。特别是,我们研究的情况下,两个领导者节点进行天真的分散选择。我们证明,这可能会严重降低性能。因此,引入了两种基于凸优化方法的算法,首先允许一个领导者进行选择,然后与其余节点共享少量关于他的选择的信息。我们将证明,这两种算法明显优于朴素的分散选择,并实现了接近集中选择的性能。

英文摘要:

Consider the estimation of an unknown parameter vector in a linear measurement model. Centralized sensor selection consists in selecting a set of k_s sensor measurements, from a total number of m potential measurements. The performance of the corresponding selection is measured by the volume of an estimation error covariance matrix. In this work, we consider the problem of selecting these sensors in a distributed or decentralized fashion. In particular, we study the case of two leader nodes that perform naive decentralized selections. We demonstrate that this can degrade the performance severely. Therefore, two heuristics based on convex optimization methods are introduced, where we first allow one leader to make a selection, and then to share a modest amount of information about his selection with the remaining node. We will show that both heuristics clearly outperform the naive decentralized selection, and achieve a performance close to the centralized selection.

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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