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IEEE Transactions on Microwave Theory and Techniques | 2018

Compressed Sensing for the Detection and Positioning of Dielectric Objects Inside Metal Enclosures by Means of Microwave Measurements

Johan Winges; Livia Cerullo; Thomas Rylander; Tomas McKelvey; Mats Viberg

Based on compressed sensing and microwave measurements, we present a procedure for the detection and positioning of dielectric objects inside a metal enclosure, where the number of objects is unknown but assumed to be limited. The formulation features a convex quadratic optimization problem with 1-norm regularization, which allows for rapid detection and positioning given a precomputed dictionary. The dictionary consists of the scattering parameters computed from a single scattering object placed at the grid points of a structured grid that covers the entire measurement region. We test our method experimentally in a microwave measurement system that features a measurement region with a diameter of 11.6 cm. The measurement region is encircled by six aperture antennas, where each aperture is the end-opening of a rectangular waveguide operated from 2.7 to 4.2 GHz. We use acrylic-glass cylinders of radius 5.2 mm as scatterers and find that the compressed sensing method can correctly detect at least up to five scatterers with an average positioning accuracy of 3 mm. In addition, we investigate the performance of the method with respect to scarcity of data, where we omit scattering parameters or frequency points.


Measurement | 2014

Global monitoring of fluidized-bed processes by means of microwave cavity resonances

Johan Nohlert; Livia Cerullo; Johan Winges; Thomas Rylander; Tomas McKelvey; Anders Holmgren; Lubomir Gradinarsky; Staffan Folestad; Mats Viberg; Anders Rasmuson


european conference on antennas and propagation | 2013

Microwave measurements for metal vessels

Livia Cerullo; Johan Nohlert; Johan Winges; Thomas Rylander; Tomas McKelvey; Lubomir Gradinarsky; Mats Viberg; Staffan Folestad


Proceedings of the V European Conference on Computational Fluid Dynamics ECCOMAS CFD 2010 J. C. F. Pereira, A. Sequeira and J. M. C. Pereira (Eds) Lisbon, Portugal,14-17 June 2010 | 2010

DETERMINATION OF MODEL ORDER FOR INVERSE SCATTERING APPLICATIONS

Livia Cerullo; Thomas Rylander; Mats Viberg


In: AIChE Annual Meeting; 07 Nov 2010-12 Nov 2010; Salt Lake City, Utah, USA. USA: AIChE; 2010. | 2010

Imaging pharmaceutical multi-processes in fluidized bed by electrical capacitance tomography

Haigang Wang; Lubomir Gradinarsky; Staffan Folestad; Livia Cerullo; Wuqiang Yang


Measurement | 2017

Microwave measurement system for dispersive dielectric properties of densely packed pellets

Livia Cerullo; Johan Winges; Thomas Rylander; Tomas McKelvey; Lubomir Gradinarsky; Staffan Folestad; Mats Viberg


Archive | 2013

Microwave Measurement Systems for In-line 3D Monitoring of Pharmaceutical Processes

Livia Cerullo


Proceedings of the 9th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances, Kansas City, MO USA, May 31 - June 3, 2011 | 2011

Concurrent estimation of space and frequency variation for dielectrics: a microwave tomography system for process sensing applications

Livia Cerullo; Thomas Rylander; Lubomir Gradinarsky; Mats Viberg; Staffan Folestad


In: 7th World Congress on Particle Technology; 19 May 2014-22 May 2014; Beijing. 2014. | 2014

Monitoring and Control of Particle Processing by Electrical Capacitance Tomography

Lubomir Gradinarsky; Wuqiang Yang; Livia Cerullo; Staffan Folestad


AntennEMB, 11-12 March, Göteborg | 2014

A Microwave Measurement System for Measurement of Dielectric Properties

Johan Winges; Livia Cerullo; Thomas Rylander; Tomas McKelvey; Lubomir Gradinarsky; Staffan Folestad; Mats Viberg

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