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

作者：Jiang, Yanwen; Qin, Yuliang; Wang, Hongqiang; Deng, Bin; Liu, Kang^*; Cheng, Binbin

来源：IEEE Access, 2018, 6: 5584-5588.

DOI：10.1109/ACCESS.2018.2799180

• Coherence factor
• side-lobe suppression
• terahertz array imaging

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.

• 出版日期2018
• 单位中国人民解放军国防科学技术大学; 中国工程物理研究院