Radio Tomographic Imaging with Wireless Networks

—Radio Tomographic Imaging (RTI) is an emerging technology for imaging passive objects (objects that do not carry a transmitting device) with wireless networks. This paper presents a linear model for using received signal strength (RSS) measurements to obtain images of moving objects. A Gaussian noise model is assumed, the accuracy of which is examined through a measurement campaign. A maximum a posteriori (MAP) estimator is derived as an image reconstruction algorithm, and an experimental implementation of RTI is presented with resultant images.

• Type: Journal
• Year: 2010
• Where: TMC
• Authors: Joey Wilson, Neal Patwari
• Keywords: Gaussian Noise Model, Passive Objects, TMC 2010, —radio Tomographic Imaging