Experimental Verification of a THz SPA Imaging System Using Compressive Sensing

This paper presents an experimental verification of a THz SPA imaging system based on the compressive sensing technique. The experiment has been conducted by only using one Tx channel and one Rx channel, which are scanning on two tracks separated by a gap to mimic the linear sparse periodic array (SPA). The results have shown an obvious advantage of CS reconstruction on reducing sampling data but maintaining a comparable image quality as the traditional Generalized Synthetic Aperture Focusing Technique (GSAFT).