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arXiv 0911.1972cs.NI
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RF传感器网络的感知空间特性

People-Sensing Spatial Characteristics of RF Sensor Networks

Neal Patwari, Joey Wilson

摘要:

“RF传感器”网络可以监视网络中的链路上的RSS值并执行无设备定位,即,定位在部署网络的区域中移动的人或物体。本文提供了一个统计模型的RSS方差作为一个函数的人的位置w.r.t.发射机(TX)和接收机(RX)。我们发现,RSS方差的系综平均值与预期的总影响功率(ETAP)有近似线性关系。然后,我们使用分析来获得近似表达式ETAP作为一个函数的人的位置,散射和反射。反直觉地,我们表明,反射,而不是散射,导致RSS方差轮廓形状像卡西尼椭圆形。实验测试报告在这里和过去的文献中所示,以验证分析。

英文摘要:

An "RF sensor" network can monitor RSS values on links in the network and perform device-free localization, i.e., locating a person or object moving in the area in which the network is deployed. This paper provides a statistical model for the RSS variance as a function of the person's position w.r.t. the transmitter (TX) and receiver (RX). We show that the ensemble mean of the RSS variance has an approximately linear relationship with the expected total affected power (ETAP). We then use analysis to derive approximate expressions for the ETAP as a function of the person's position, for both scattering and reflection. Counterintuitively, we show that reflection, not scattering, causes the RSS variance contours to be shaped like Cassini ovals. Experimental tests reported here and in past literature are shown to validate the analysis.

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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