Feature extraction and identification of explosive materials in reflective terahertz spectroscopic imaging system

Yu Wang; Liangliang Zhang; Chao Deng; Weiwei Li; Hua Zhong; Cunlin Zhang

doi:10.1117/12.805641

9 February 2009 Feature extraction and identification of explosive materials in reflective terahertz spectroscopic imaging system

Yu Wang, Liangliang Zhang, Chao Deng, Weiwei Li, Hua Zhong, Cunlin Zhang

Author Affiliations +

Proceedings Volume 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration; 71580V (2009) https://doi.org/10.1117/12.805641
Event: International Conference of Optical Instrument and Technology, 2008, Beijing, China

Abstract

We present a novel feature extraction technique for identification of explosive and biological materials using terahertz reflective time domain spectroscopy (THz-RTDS). The absorption signatures of the materials are extracted directly from the derivative of the amplitude reflectance without measuring the phase shift caused by the sample's height. This technique provides a straightforward and fast solution to solve the phase-retrieval problem in RTDS and will benefit the future development of standoff, large size focal-plane THz sensing and imaging system.

Citation Download Citation

Yu Wang, Liangliang Zhang, Chao Deng, Weiwei Li, Hua Zhong, and Cunlin Zhang "Feature extraction and identification of explosive materials in reflective terahertz spectroscopic imaging system", Proc. SPIE 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration, 71580V (9 February 2009); https://doi.org/10.1117/12.805641

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