UWB synthetic aperture-based radar system for hemorrhagic head-stroke detection

In this paper, a synthetic aperture based ultra wideband imaging system with semi-adaptive signal processing is proposed for hemorrhagic stroke detection in a simulated head model. The 3D spherical model consists of four dispersive layers representing different parts of the head. In a bistatic configuration, two ultra wideband Vivaldi antennas sweep a semi-spherical synthetic array conformal to the model. As for image reconstruction algorithm, conventional delay and sum together with coherence weighting is applied to the backscattered signals. Through achieved simulation results, it is shown that ultra wideband radar concept has the potential of being an alternative imaging technique for stroke detection.