Detection and identification of compound explosive using the SDA method of the reflected THz signal

被引：9
|
作者：
Trofimov, Vyacheslav A. [1 ]
Varentsova, Svetlana A. [1 ]
Szustakowski, Mieczyslaw [2 ]
Palka, Norbert
机构：
[1] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[2] Mil Univ Technol, Warsaw, Poland
来源：
ACTIVE AND PASSIVE SIGNATURES III | 2012年 / 8382卷
关键词：
reflected THz pulse; stand-off reflection; specular reflection; method of spectral dynamics analysis; detection and identification of substances; compound explosive; SECURITY APPLICATIONS; TERAHERTZ TECHNOLOGY;
D O I：
10.1117/12.919746
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The SDA (Spectral Dynamics Analysis) method was applied for the detection and identification of two mixtures of explosive (Hexogen-Trinitrotoluene-Penthryte and Hexogen-Trinitrotoluene-Octogen) hidden under various coverings the thin, rough, thick layers of Polyethylene foils and a layer of cotton. The main difficulty for identification consists in fact that the mixtures have practically identical spectral properties both in the Stand-Off (reflection nearly at 90 degrees) and Specular (reflection at 45 degrees) mode. The presence of covering makes additional difficulties for identification because it distorts the spectral properties of the reflected THz signal. Nevertheless, it is possible to find the identifiers characterizing the presence of the individual explosive in the mixtures under the covering analyzing the spectrograms and dynamics of spectral lines of the main pulses and the sub-pulses following the main pulse.
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页数：13
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