Radio tomographic imaging with wireless networks
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Authors | J. Wilson, N. Patwari |
Journal/Conference Name | IEEE Transactions on Mobile Computing |
Paper Category | Computer Networks and Communications |
Paper Abstract | 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. |
Date of publication | 2010 |
Code Programming Language | C |
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