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This paper presents a general calibration procedure for probing RF voltages and currents in the time domain with conventional oscilloscopes using a directional coupler. It eliminates the need for a separate power calibration and takes advantage of the large dynamic range of a vector network analyzer during the calibration step. As a first application of this procedure, the electromagnetic disturbances...
A radio tomographic imaging (RTI) system uses the received signal strength (RSS) measured by RF sensors in a static wireless network to localize people in the deployment area, without having them to carry or wear an electronic device. This paper addresses the fact that small-scale changes in the position and orientation of the antenna of each RF sensor can dramatically affect imaging and localization...
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