Sensitivity-Based Reconstruction in Microwave Imaging Using Near-Field Calibration Measurements

The sensitivity-based microwave imaging method requires the incident field distributions in the background medium, which insofar have been derived from analytical or simulation models. However, such models often prove inadequate in near-field imaging due to the complexity of the background and the acquisition setup. Here, we propose a calibration technique to efficiently acquire the necessary field information via measurements of a known …