Abstract- A Side-Lobe Suppression Method Based on Coherence Factor for Terahertz Array Imaging

Yanwen Jiang,  Yuliang Qin,  Hongqiang Wang,  Bin Deng,  Kang Liu, Binbin Cheng

An imaging method with side-lobe suppression based on coherence factor is proposed to improve the image quality of Terahertz (THz) array imaging, which is validated by simulation and experiments. The imaging results of real-world data demonstrate that the side-lobe can be suppressed by 29 dB using the proposed method.

http://ieeexplore.ieee.org/document/8272383/

Terahertz (THz) arrays can be used to improve the data acquisition speed considerably in realtime imaging applications. However, the THz array imaging usually suffers from the side-lobe artifacts, which leads to a severe decline in the image quality. In this paper, a side-lobe suppression method based on coherence factor is proposed to improve the image quality. The influences of signal-to-noise ratio on the imaging results are analyzed by simulation. Furthermore, the results based on the real-world data validate the effectiveness of the proposed method, which indicates that the side-lobe is suppressed by 29 dB. This paper can benefit the development of THz imaging technique and its applications in real-time imaging realms.