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A tomographic time-domain reconstruction algorithm for solving the inverse electromagnetic problem is described. The application we have in mind is dielectric breast cancer detection but the results are of general interest to the field of microwave tomography. Reconstructions have been made from experimental and numerically simulated data for objects of… (More)

Integral representations for the solution of linear elliptic partial differential equations (PDEs) can be obtained using Green's theorem. However, these representations involve both the Dirichlet and the Neumann values on the boundary, and for a well-posed boundary-value problem (BVPs) one of these functions is unknown. A new transform method for solving… (More)

- P. Hashemzadeh
- 2011

This study focuses on the noise statistics of the normalized data, in time-difference imaging. The commonly practiced normalization procedure, represents the normalized data as the ratio of two random variables. We provide closed form expressions for computing estimates of the first, second order moments, and the covariance matrix of normalized data. The… (More)

- P. Hashemzadeh, T. Rylander, M. Viberg
- 2008 5th IEEE Sensor Array and Multichannel…
- 2008

We estimate the radius of a perfect electric conductor (PEC) half-sphere placed on a ground plane, given six bi-conical antennas that suffer from manufacturing errors. The results are complemented by an analytical model of the sensor system and the scatterer. The analytical model includes the front-end electronics in combination with the antenna radiation… (More)

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