arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0809.1900cs.ITmath.IT
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传感器网络中有限距离多模传感器的分布式检测

Distributed Detection in Sensor Networks with Limited Range Multi-Modal Sensors

E. Ermis, V. Saligrama

摘要:

研究了有限距离多模态传感器传感器网络中的多目标检测问题。有限范围的传感环境出现在传感领域中,易于信号衰减和路径损耗。一般问题补充了广泛考虑的分散检测问题,其中所有传感器观察相同的对象。在本文中,我们开发了一个分布式检测方法的基础上,最近发展的错误发现率(FDR)和相关的BH测试程序。BH过程基于标量检验统计量的秩序。首先,我们开发标量检验统计量的多维数据处理多模态传感器的观察,并建立其最优的BH程序。然后,我们提出了一个分布式算法,在理想情况下的无限衰减识别的传感器,在附近的一个对象。我们证明了通信消息的可扩展性,以大SNET的通信消息的复杂性的上限与在附近的对象的传感器的数量呈线性比例,是独立的SNET中的传感器的总数。这提出了用于评估SNET的性能的重要原则,即,对于通信的可扩展性和关于SNET中的对象或事件的数量的性能的需要,而与网络大小无关。然后,我们考虑有限衰减建模传感器观测破坏所产生的不确定干扰,从遥远的物体和发展强大的扩展,我们理想化的分布式计划。鲁棒性属性确保错误性能和通信消息复杂度随着干扰而优雅地降级。

英文摘要:

We consider a multi-object detection problem over a sensor network (SNET) with limited range multi-modal sensors. Limited range sensing environment arises in a sensing field prone to signal attenuation and path losses. The general problem complements the widely considered decentralized detection problem where all sensors observe the same object. In this paper we develop a distributed detection approach based on recent development of the false discovery rate (FDR) and the associated BH test procedure. The BH procedure is based on rank ordering of scalar test statistics. We first develop scalar test statistics for multidimensional data to handle multi-modal sensor observations and establish its optimality in terms of the BH procedure. We then propose a distributed algorithm in the ideal case of infinite attenuation for identification of sensors that are in the immediate vicinity of an object. We demonstrate communication message scalability to large SNETs by showing that the upper bound on the communication message complexity scales linearly with the number of sensors that are in the vicinity of objects and is independent of the total number of sensors in the SNET. This brings forth an important principle for evaluating the performance of an SNET, namely, the need for scalability of communications and performance with respect to the number of objects or events in an SNET irrespective of the network size. We then account for finite attenuation by modeling sensor observations as corrupted by uncertain interference arising from distant objects and developing robust extensions to our idealized distributed scheme. The robustness properties ensure that both the error performance and communication message complexity degrade gracefully with interference.

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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