A Spiral-like Acquisition Strategy for 3D Huygens' Principle Based Microwave Imaging

This paper focuses on executing a novel methodology to achieve imaging time reduction via 3D imaging algorithm based on Huygens principle using a microwave imaging device (MammoWave). Specifically, a three-layer cylindrical phantom with a 3D structured inclusion has been fabricated with varying dielectric properties. Various spiral-like (along z-axis) measurement scenarios have been considered to investigate the possibility of measurement time reduction. In the first scenario, we have performed measurements in spiral-like configuration-I at multiple planes along the z-axis, while for the second scenario we have applied spiral configuration-II in an alternate way in terms of receiving points. We found that the proposed spiral-like measurement scenarios may lead to a measurement time saving of 50%, with a lower S/C ratio (decrease of maximum 3.2 dB) and slightly higher error (approximately 3.5%) in inclusion dimensional analysis and localization.