Near-field microwave holographic imaging: Target localization and resolution study

A new two-dimensional (2D) microwave holographic technique is proposed to reconstruct the 2D image of a target. It is based on the data recorded by two antennas scanning two rectangular parallel apertures on both sides of a target. In this method the reflection coefficients of the antennas are first processed to localize target in the range direction. Then, the 2D image of the target is reconstructed. There is no assumption for the incident field and both the back-scattered and forward-scattered signals can be used to reconstruct the image of the target. This makes the technique applicable to tomographic measurements where the near-field signal transmitted through the target is measured.