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 illposedness 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.
Reference REF presented a linear model for using RSS measurements to obtain images of moving objects.
Radio Tomographic Imaging with Wireless Networks
IEEE Transactions on Mobile Computing
IEEE Transactions on Mobile Computing
Computer Science