Linear frequency-angular correlation function (FACF) imaging of targets buried in the presence of clutter

A novel correlation imaging technique called frequency angular correlation function imaging (FACF) was investigated to determine its role in clutter suppression imaging. A strong response from clutter in small angle and frequency separation between correlated scattered fields has been observed. By providing larger angular and frequency separation between scattered fields in the imaging process, FACF becomes an inherent clutter suppression algorithm. Experimental microwave studies for FACF were conducted and compared to confocal SAR imaging to determine the range of clutter suppression over other techniques.