Radio Tomographic Imaging with Wireless Networks

被引：632

作者：

Wilson, Joey ^{[1
]}

Patwari, Neal ^{[1
]}

机构：

[1] Univ Utah, Salt Lake City, UT 84108 USA

来源：

IEEE TRANSACTIONS ON MOBILE COMPUTING | 2010年 / 9卷 / 05期

基金：

美国国家科学基金会;

关键词：

Wireless; sensor networks; inverse filtering; linear systems; applications;

D O I：

10.1109/TMC.2009.174

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Radio Tomographic Imaging (RTI) is an emerging technology for imaging the attenuation caused by physical objects in wireless networks. This paper presents a linear model for using received signal strength (RSS) measurements to obtain images of moving objects. Noise models are investigated based on real measurements of a deployed RTI system. Mean-squared error (MSE) bounds on image accuracy are derived, which are used to calculate the accuracy of an RTI system for a given node geometry. The ill-posedness of RTI is discussed, and Tikhonov regularization is used to derive an image estimator. Experimental results of an RTI experiment with 28 nodes deployed around a 441 square foot area are presented.

引用

页码：621 / 632

页数：12

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