3:00 PM - 3:15 PM
△ [18p-E206-5] Auto-focusing Three-dimensional Terahertz Imaging Algorithm by Range Points Migration
Keywords:THz imaging, Auto focusing, Signal processing
The inherent problem in the conventional THz imaging system is that the azimuth resolution depends on the penetration range due to the lens based dielectric focusing. This problem is efficiently solved by the synthetic aperture (SA) process assuming wider THz beam. Furthermore, the range points migration (RPM) method has a numerous advantages from the usual SA approaches, in terms of accuracy, resolution or computational cost. This paper proposes the novel imaging algorithm based on the range points migration (RPM) for the terahertz (THz) subsurface three dimensional imaging, which is suitable for general THz-time domain spectroscopic (THz TDS) measurement. The effectiveness of the proposed method has been demonstrated by the THz-TDS measured data.