On the Effects of the Exploitation of Source Diversity in Aspect Limited Multi-View Microwave Imaging Systems

The reconstruction of unknown regions through active microwave imaging techniques requires the retrieval of a large amount of unknown parameters if one aims at fully characterize the electromagnetic properties of the targets under test. Unfortunately, a limited number of independent measurements is available, especially when the scattered field is undersampled because of intrinsic limitations of the imaging setup. In this context, the paper investigates the potentialities of a methodology based on a multi-source illumination as a possible strategy for compensating the reduction of informative field measures and improving the imaging accuracy with respect to single-source experiments.