Scattering Data Acquisition in Microwave Imaging Using Compressive Sampling Techniques

OLIVERI, Giacomo and ANSELMI, Nicola and SALUCCI, Marco and POLI, Lorenzo and MASSA, Andrea (2024) Scattering Data Acquisition in Microwave Imaging Using Compressive Sampling Techniques. Technical Report. ELEDIA Research Center - University of Trento.

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Abstract

This work focuses on the design of data acquisition systems for microwave imaging. Initially, the problem of scattering data collection is formulated within the framework of Compressive Sampling (CS). The resulting problem is addressed by minimizing the bound on the Restricted Isometry Constant (RIC) of the observation matrix, which mathematically models the acquisition system. To achieve this, a novel incoherence-based RIC bound is developed to account for the underlying physical properties of the microwave imaging setup. Numerical experiments are conducted to evaluate the information acquisition capabilities of the proposed method and to assess its impact on the performance of subsequent Compressive Sensing (CS)-based inversion, in comparison with traditional Nyquist–Shannon sampling techniques.

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