Active THz imaging system to measure water content evolution in leaves

2011 ◽  
Author(s):  
David Etayo ◽  
Juan Carlos Iriarte ◽  
Inés Palacios ◽  
Inigo Ederra ◽  
Ramón Gonzalo
Keyword(s):  
Water Content ◽  
Imaging System ◽  
Thz Imaging ◽  
Measure Water Content

scholarly journals BWO based THz imaging system

2014 ◽  
Vol 486 ◽  
pp. 012027 ◽  
Author(s):  
Artem N Perov ◽  
Kirill I Zaytsev ◽  
Irina N Fokina ◽  
Valeriy E Karasik ◽  
Egor V Yakovlev ◽  
...  
Keyword(s):  
Imaging System ◽  
Thz Imaging

scholarly journals A Hybrid THz Imaging System With a 100-Pixel CMOS Imager and a 3.25–3.50 THz Quantum Cascade Laser Frequency Comb

2019 ◽  
Vol 2 (9) ◽  
pp. 151-154 ◽  
Author(s):  
T. J. Smith ◽  
Anna Broome ◽  
Daniel Stanley ◽  
Jonas Westberg ◽  
Gerard Wysocki ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Imaging System ◽  
Frequency Comb ◽  
Laser Frequency ◽  
Thz Imaging ◽  
Quantum Cascade ◽  
Cmos Imager

scholarly journals THz Reflective Imaging System Utilizing Broadband Homodyne Amplification for Artifact-Free See-Through Imaging

2020 ◽  
Vol 10 (20) ◽  
pp. 7228
Author(s):  
Kiwon Moon ◽  
Il-Min Lee ◽  
Eui Su Lee ◽  
Kyung Hyun Park
Keyword(s):  
Signal Amplification ◽  
Continuous Wave ◽  
Imaging System ◽  
Imaging Techniques ◽  
Thz Imaging ◽  
Material Loss ◽  
Frequency Dependent ◽  
Imaging Capability ◽  
Technical Issues ◽  
Non Destructive

Terahertz (THz) technology offers unique see-through imaging capability for various non-destructive inspection applications. In this work, we implemented a broadband continuous-wave THz imaging system to study technical issues related to the see-through imaging, including frequency-dependent resolution, material loss, and interference-induced artifacts. The interference-induced false contrast and artifacts were observed, which were suppressed by broadband imaging techniques adopting the homodyne signal amplification by interferometric setup to overcome the material loss.

A compact THz imaging system

2015 ◽  
Author(s):  
Aleksander Sešek ◽  
Andrej Švigelj ◽  
Janez Trontelj
Keyword(s):  
Imaging System ◽  
Thz Imaging

Active THz imaging system with improved frame rate

2009 ◽  
Author(s):  
W. von Spiegel ◽  
C. am Weg ◽  
R. Henneberger ◽  
R. Zimmermann ◽  
T. Loeffler ◽  
...  
Keyword(s):  
Imaging System ◽  
Frame Rate ◽  
Thz Imaging

Reflective terahertz (THz) imaging: system calibration using hydration phantoms

2013 ◽  
Author(s):  
Neha Bajwa ◽  
James Garritano ◽  
Yoon Kyung Lee ◽  
Priyamvada Tewari ◽  
Shijun Sung ◽  
...  
Keyword(s):  
Imaging System ◽  
Thz Imaging ◽  
System Calibration

scholarly journals Adaptive 3D Imaging for Moving Targets Based on a SIMO InISAR Imaging System in 0.2 THz Band

2021 ◽  
Vol 13 (4) ◽  
pp. 782
Author(s):  
Hongwei Li ◽  
Chao Li ◽  
Shiyou Wu ◽  
Shen Zheng ◽  
Guangyou Fang
Keyword(s):  
Synthetic Aperture Radar ◽  
3D Imaging ◽  
Imaging System ◽  
Synthetic Aperture ◽  
Moving Targets ◽  
Thz Imaging ◽  
Inverse Synthetic Aperture Radar ◽  
3D Images ◽  
Imaging Results ◽  
Aperture Radar

Terahertz (THz) imaging technology has received increased attention in recent years and has been widely applied, whereas the three-dimensional (3D) imaging for moving targets remains to be solved. In this paper, an adaptive 3D imaging scheme is proposed based on a single input and multi-output (SIMO) interferometric inverse synthetic aperture radar (InISAR) imaging system to achieve 3D images of moving targets in THz band. With a specially designed SIMO antenna array, the angular information of the targets can be determined using the phase response difference in different receiving channels, which then enables accurate tracking by adaptively adjusting the antenna beam direction. On the basis of stable tracking, the high-resolution imaging can be achieved. A combined motion compensation method is proposed to produce well-focused and coherent inverse synthetic aperture radar (ISAR) images from different channels, based on which the interferometric imaging is performed, thus forming the 3D imaging results. Lastly, proof-of-principle experiments were performed with a 0.2 THz SIMO imaging system, verifying the effectiveness of the proposed scheme. Non-cooperative moving targets were accurately tracked and the 3D images obtained clearly identify the targets. Moreover, the dynamic imaging results of the moving targets were achieved. The promising results demonstrate the superiority of the proposed scheme over the existing THz imaging systems in realizing 3D imaging for moving targets. The proposed scheme shows great potential in detecting and monitoring moving targets with non-cooperative movement, including unmanned military vehicles and space debris.

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