
Proceedings Paper
The method of the spectral dynamics analysis of reflected signal for problem of identification of substanceFormat | Member Price | Non-Member Price |
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Paper Abstract
The method of spectral dynamics analysis (SDA-method) is used for the detection and identification of explosive RDX
and harmless substances in pellets with different weight and hidden under the thin layer of polyethylene or cotton by
reflected THz signal. The signal was measured on the long-term interval with duration about 180 ps and contains not
only the main reflected THz pulse but the subpulse with less intensity. Two cases of the reflection were investigated - at
90° and at 45° from the sample. SDA method allows to obtain the spectrogram - 2D THz signature of the substance, and
to analyze the dynamics of many spectral lines of the signal by one set of measurements. The identifiers characterizing
the presence of substance in the sample were found in all investigated samples - they contain in the corresponding
spectrograms and dynamics of spectral lines. We showed that the analysis of the reflected signal over the short time
intervals (less than 50 ps) is insufficient for reliable identification of the substances, especially of hidden ones, because in
some cases the characteristic features of the substances can be found only in the subpulses. The influence of window
shape in Fourier-Gabor method on the dynamics of spectral lines was discussed too.
Paper Details
Date Published: 26 May 2011
PDF: 12 pages
Proc. SPIE 8023, Terahertz Physics, Devices, and Systems V: Advance Applications in Industry and Defense, 80230O (26 May 2011); doi: 10.1117/12.883672
Published in SPIE Proceedings Vol. 8023:
Terahertz Physics, Devices, and Systems V: Advance Applications in Industry and Defense
Mehdi Anwar; Nibir K. Dhar; Thomas W. Crowe, Editor(s)
PDF: 12 pages
Proc. SPIE 8023, Terahertz Physics, Devices, and Systems V: Advance Applications in Industry and Defense, 80230O (26 May 2011); doi: 10.1117/12.883672
Show Author Affiliations
Vyacheslav A. Trofimov, Lomonosov Moscow State Univ. (Russian Federation)
Svetlana A. Varentsova, Lomonosov Moscow State Univ. (Russian Federation)
Norbert Palka, Military Univ. of Technology (Poland)
Svetlana A. Varentsova, Lomonosov Moscow State Univ. (Russian Federation)
Norbert Palka, Military Univ. of Technology (Poland)
Mieczyslaw Szustakowski, Military Univ. of Technology (Poland)
Tomasz Trzcinski, Military Univ. of Technology (Poland)
Tomasz Trzcinski, Military Univ. of Technology (Poland)
Published in SPIE Proceedings Vol. 8023:
Terahertz Physics, Devices, and Systems V: Advance Applications in Industry and Defense
Mehdi Anwar; Nibir K. Dhar; Thomas W. Crowe, Editor(s)
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