Terahertz Spectroscopy and Imaging for Defense and Security Applications

2007 ◽  
Vol 95 (8) ◽  
pp. 1514-1527 ◽  
Author(s):  
Hai-Bo Liu ◽  
Hua Zhong ◽  
Nicholas Karpowicz ◽  
Yunqing Chen ◽  
Xi-Cheng Zhang
Keyword(s):  
Terahertz Spectroscopy ◽  
Security Applications

Application of Terahertz Spectroscopy and Imaging

2010 ◽  
Vol 5 (4) ◽  
pp. 123-129
Author(s):  
Mu Kaijun ◽  
Zhang Cunlin
Keyword(s):  
Time Domain ◽  
Quartz Crystal ◽  
Terahertz Spectroscopy ◽  
Thz Radiation ◽  
Radiation Polarization ◽  
Air Plasma ◽  
Thz Imaging ◽  
Terahertz Time Domain Spectroscopy ◽  
Security Applications ◽  
Angle Of Rotation

We examined the feasibility of Terahertz time-domain spectroscopy (THz-TDS) using a 4-mm-thick quartz crystal to extract the angle of rotation of THz radiation polarization induced by a two-color laser in air plasma. We also used the THz-TDS technique to identify explosives and melamine in mixtures. In addition, we presented a new opto-mechanical scanner for security applications using the method of passive THz imaging

FPGA Implementation of MC-CDMA for High Security Applications

2013 ◽  
Vol 5 (1) ◽  
pp. 36-41
Author(s):  
R. Ganesh ◽  
◽  
Ch. Sandeep Reddy ◽  
Keyword(s):  
Fpga Implementation ◽  
Security Applications ◽  
High Security

High resolution terahertz spectroscopy for analytical applications

2020 ◽  
Vol 63 (7) ◽  
pp. 708-720 ◽  
Author(s):  
V L Vaks ◽  
V A Anfertev ◽  
V Yu Balakirev ◽  
S A Basov ◽  
E G Domracheva ◽  
...  
Keyword(s):  
High Resolution ◽  
Terahertz Spectroscopy ◽  
Analytical Applications

Continuous-wave Terahertz Spectroscopy System Based on Photodiodes

PIERS Online ◽  
2010 ◽  
Vol 6 (4) ◽  
pp. 390-394 ◽  
Author(s):  
Tadao Nagatsuma ◽  
Akira Kaino ◽  
Shintaro Hisatake ◽  
Katsuhiro Ajito ◽  
Ho-Jin Song ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Terahertz Spectroscopy ◽  
Spectroscopy System

A New Image Encryption Scheme Using Dual Chaotic Map Synchronization

2020 ◽  
Vol 18 (1) ◽  
Keyword(s):  
Image Encryption ◽  
Chaotic Systems ◽  
Initial Conditions ◽  
Chaotic Map ◽  
Security Applications ◽  
The Common ◽  
And Diffusion ◽  
Confusion And Diffusion ◽  
Sensitivity To Initial Conditions ◽  
Diffusion Properties

Chaotic systems behavior attracts many researchers in the field of image encryption. The major advantage of using chaos as the basis for developing a crypto-system is due to its sensitivity to initial conditions and parameter tunning as well as the random-like behavior which resembles the main ingredients of a good cipher namely the confusion and diffusion properties. In this article, we present a new scheme based on the synchronization of dual chaotic systems namely Lorenz and Chen chaotic systems and prove that those chaotic maps can be completely synchronized with other under suitable conditions and specific parameters that make a new addition to the chaotic based encryption systems. This addition provides a master-slave configuration that is utilized to construct the proposed dual synchronized chaos-based cipher scheme. The common security analyses are performed to validate the effectiveness of the proposed scheme. Based on all experiments and analyses, we can conclude that this scheme is secure, efficient, robust, reliable, and can be directly applied successfully for many practical security applications in insecure network channels such as the Internet

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