基于太赫兹时域光谱系统的爆炸物识别
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摘要
描述了太赫兹时域光谱系统的原理和组成,研制了太赫兹时域光谱(0.1~3THz)系统。介绍了太赫兹时域光谱技术在爆炸物识别方面的优势及其特点,提出了爆炸物识别的数学模型和方法。采用太赫兹时域光谱系统测试爆炸物样品的特征吸收光谱并将其作为标准模板,然后将爆炸物置于土壤、水泥和塑料障碍物后,采用太赫兹时域光谱系统得到穿透障碍物后爆炸物的特征吸收光谱,并将其与标准模板比对,从而实现爆炸物的隔物穿透识别。实验得到爆炸物RDX的特征吸收光谱,其特征频率为0.82,1.70和2.40THz。实验还对不同厚度和种类障碍物下爆炸物RDX、CL-20、LLM-105和FOX-1进行了实验测试,结果表明:穿透障碍物后爆炸物可识别的特征吸收光谱与标准模板匹配得很好,证明根据爆炸物特征吸收光谱实现爆炸物匹配识别的方法是可行的。基于文中提出的太赫兹时域光谱系统可进一步开展爆炸物残留痕量探测识别和隔物技术研究。
The principle and composition of terahertz time-domain spectrum systems were described,and a terahertz time-domain spectrum system ranged from 0.1 THz to 3 THz was developed.The characters and predominance of terahertz time-domain spectrum technology on explosive identification were introduced and a mathematical model and a method for the explosive identification were proposed.The terahertz time-domain spectrum system was used to test the character absorbing spectra of explosives and main absorbing spectra were regarded as standard templates.Then,four kinds explosives(RDX,CL-20,LLM-105 and FOX-1)were put behind the barriers(soil,cement and plastic),and the terahertz time-domain spectrum system was used to obtain the character absorbing spectra of explosives penetrating through the barriers.The results were compared with standard templates to implement the explosive identification.The character absorbing spectra of RDX were obtained,and their character frequencies are 0.82,1.70 and 2.40 THz.Furthermore,these explosives were tested through different barriers with different thicknesses.The results show that character absorbing spectra of explosives penetrating through the barriers match the standard templates perfectly,which veri-fies that it is feasible to use the terahertz time-domain spectrum system to realize explosive identification according to character absorbing spectra.Moreover,the terahertz time-domain spectrum system can be used to identify the residual trace of explosives and explore the imaging technology for penetrating through barriers.
The principle and composition of terahertz time-domain spectrum systems were described,and a terahertz time-domain spectrum system ranged from 0.1 THz to 3 THz was developed.The characters and predominance of terahertz time-domain spectrum technology on explosive identification were introduced and a mathematical model and a method for the explosive identification were proposed.The terahertz time-domain spectrum system was used to test the character absorbing spectra of explosives and main absorbing spectra were regarded as standard templates.Then,four kinds explosives(RDX,CL-20,LLM-105 and FOX-1)were put behind the barriers(soil,cement and plastic),and the terahertz time-domain spectrum system was used to obtain the character absorbing spectra of explosives penetrating through the barriers.The results were compared with standard templates to implement the explosive identification.The character absorbing spectra of RDX were obtained,and their character frequencies are 0.82,1.70 and 2.40 THz.Furthermore,these explosives were tested through different barriers with different thicknesses.The results show that character absorbing spectra of explosives penetrating through the barriers match the standard templates perfectly,which veri-fies that it is feasible to use the terahertz time-domain spectrum system to realize explosive identification according to character absorbing spectra.Moreover,the terahertz time-domain spectrum system can be used to identify the residual trace of explosives and explore the imaging technology for penetrating through barriers.
引文
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[2]李宏光,杨鸿儒,薛战理,等.窄带光谱滤光法探测低温黑体太赫兹辐射[J].光学精密工程,2013,21(6):1410-1416.LI H G,YANG H R,XUE ZH L,et al..Terahretz radiation detection of low temperature blackbody based on narrow band spectral filter method[J].Opt.Precision Eng.,2013,21(6):1410-1416.(in Chinese)
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[4]张兴宁,陈稷,周泽魁.太赫兹时域光谱技术[J].激光与光电子学进展,2005,42(7):35-38.ZHANG X N,CHEN J,ZHOU Z K.THz time-domain spectroscopy technology[J].Laser&Optoelectronics Progress,2005,42(7):35-38.(in Chinese)
[5]常胜利,王晓峰,邵铮铮.太赫兹光谱技术原理及其应用[J].国防科技,2015,36(2):17-22.CHANG SH L,WANG X F,SHAO ZH ZH.Terahertz spectrum and its application[J].National Defense Science&Technology,2015,36(2):17-22.(in Chinese)
[6]冯瑞姝,李微微,周庆莉,等.爆炸物及相关混合材料的太赫兹波谱[J].无损检测,2009,31(5):337-339.FENG R SH,LI W W,ZHOU Q L,et al..Terahertz spectroscopy of explosives and the related compounds[J].Nondestructive Testing,2009,31(5):337-339.(in Chinese)
[7]王高,周汉昌,姚宝岱,等.爆炸物太赫兹光谱探测技术研究进展[J].激光与光电子学进展,2011,48(1):1-7.WANG G,ZHOU H CH,YAO B D,et al..Progress of terahertz spectroscopy detection technique of explosives[J].Laser&Optoelectronics Progress,2011,48(1):1-7.(in Chinese)
[8]许欣,吴勋,孟宪君,等.太赫兹技术在爆炸物检测中的应用[J].光学技术,2008,34(增刊):265-269.XU X,WU X,MENG X J,et al..Application of terahertz technology in explosive detection[J].Optical Technique,2008,34(Suppl.):265-269.(in Chinese)
[9]杜宇,张伟斌,肖丽.太赫兹检测技术在炸药检测中的应用[J].信息与电子工程,2011,9(3):287-290.DU Y,ZHANG W B,XIAO L.Application of terahertz wave technology in explosive analysis[J].Information and Electronic Engineering,2011,9(3):287-290.(in Chinese)
[10]卢树华.基于太赫兹光谱技术的爆炸物类危险品检测[J].激光与光电子学进展,2012,49(4):42-48.LU SH H.Dedection of explosives by terahertz spectroscopic techniques[J].Laser&Optoelectronics Progress,2012,49(4):42-48.(in Chinese)
[11]陈涛,李智,莫玮.基于模糊模式识别的爆炸物THz光谱识别[J].仪器仪表学报,2012,33(11):2480-2486.CHEN T,LI ZH,MO W.Identification of terahertz absportion spectra of explorsives based on fuzzy pattern recognition[J].Chinese Journal of Scientific Instrument,2012,33(11):2480-2486.(in Chinese)
[12]LI H.Measurement precision analysis for terahertz absorption spectrum of explosive materials by using terahertz transmission spectroscopy[J].SPIE,2013,8909:89090U-1-U-17.
[13]姚宝岱,王高.钝感RDX及HMX炸药的太赫兹光谱分析[J].光电技术应用,2010,25(6):11-13.YAO B D,WANG G.Analysis of terahertz spectrum of explosives RDX and HMX[J].Electro-optic Technology Application,2010,25(6):11-13.(in Chinese)
[14]张泽,尚丽平,邓琥.基于LabVIEW的太赫兹时域光谱系统数据采集实现[J].太赫兹科学与电子信息学报,2014,12(4):491-495.ZHANG Z,SHANG L P,DENG H.Data acquisition realization of terahertz time-domain spectroscopy system based on LabVIEW[J].Journal of Terahertz Science and Electronic Information Technology,2014,12(4):491-495.(in Chinese)
[15]王秀敏.太赫兹时域谱提取样品光学参数的具体算法[J].北京建筑工程学院学报,2009,25(1):46-51.WANG X M.Method of extracting materials′optical parameter from terahertz time-domain spectroscopy[J].Journal of Beijing University of Civil Engineering and Architecture,2009,25(1):46-51.(in Chinese)
[16]吴猛,赵国忠,梁承森,等.基于LabVIEW的太赫兹时域光谱数据处理[J].现代科学仪器,2009,2(4):9-11.WU M,ZHAO G ZH,LIANG CH S,et al..Data processing of terahertz time domain spectroscopy based on LabVIEW[J].Modern Scientific Instrument,2009,2(4):9-11.(in Chinese)
[2]李宏光,杨鸿儒,薛战理,等.窄带光谱滤光法探测低温黑体太赫兹辐射[J].光学精密工程,2013,21(6):1410-1416.LI H G,YANG H R,XUE ZH L,et al..Terahretz radiation detection of low temperature blackbody based on narrow band spectral filter method[J].Opt.Precision Eng.,2013,21(6):1410-1416.(in Chinese)
[3]许景周,张希成.太赫兹科学技术和应用[M].北京:北京大学出版社,2007:69-71.XU J ZH,ZHANG X CH.THz Science Technology and Application[M].Beijing:Peking University Press,2007:69-71.
[4]张兴宁,陈稷,周泽魁.太赫兹时域光谱技术[J].激光与光电子学进展,2005,42(7):35-38.ZHANG X N,CHEN J,ZHOU Z K.THz time-domain spectroscopy technology[J].Laser&Optoelectronics Progress,2005,42(7):35-38.(in Chinese)
[5]常胜利,王晓峰,邵铮铮.太赫兹光谱技术原理及其应用[J].国防科技,2015,36(2):17-22.CHANG SH L,WANG X F,SHAO ZH ZH.Terahertz spectrum and its application[J].National Defense Science&Technology,2015,36(2):17-22.(in Chinese)
[6]冯瑞姝,李微微,周庆莉,等.爆炸物及相关混合材料的太赫兹波谱[J].无损检测,2009,31(5):337-339.FENG R SH,LI W W,ZHOU Q L,et al..Terahertz spectroscopy of explosives and the related compounds[J].Nondestructive Testing,2009,31(5):337-339.(in Chinese)
[7]王高,周汉昌,姚宝岱,等.爆炸物太赫兹光谱探测技术研究进展[J].激光与光电子学进展,2011,48(1):1-7.WANG G,ZHOU H CH,YAO B D,et al..Progress of terahertz spectroscopy detection technique of explosives[J].Laser&Optoelectronics Progress,2011,48(1):1-7.(in Chinese)
[8]许欣,吴勋,孟宪君,等.太赫兹技术在爆炸物检测中的应用[J].光学技术,2008,34(增刊):265-269.XU X,WU X,MENG X J,et al..Application of terahertz technology in explosive detection[J].Optical Technique,2008,34(Suppl.):265-269.(in Chinese)
[9]杜宇,张伟斌,肖丽.太赫兹检测技术在炸药检测中的应用[J].信息与电子工程,2011,9(3):287-290.DU Y,ZHANG W B,XIAO L.Application of terahertz wave technology in explosive analysis[J].Information and Electronic Engineering,2011,9(3):287-290.(in Chinese)
[10]卢树华.基于太赫兹光谱技术的爆炸物类危险品检测[J].激光与光电子学进展,2012,49(4):42-48.LU SH H.Dedection of explosives by terahertz spectroscopic techniques[J].Laser&Optoelectronics Progress,2012,49(4):42-48.(in Chinese)
[11]陈涛,李智,莫玮.基于模糊模式识别的爆炸物THz光谱识别[J].仪器仪表学报,2012,33(11):2480-2486.CHEN T,LI ZH,MO W.Identification of terahertz absportion spectra of explorsives based on fuzzy pattern recognition[J].Chinese Journal of Scientific Instrument,2012,33(11):2480-2486.(in Chinese)
[12]LI H.Measurement precision analysis for terahertz absorption spectrum of explosive materials by using terahertz transmission spectroscopy[J].SPIE,2013,8909:89090U-1-U-17.
[13]姚宝岱,王高.钝感RDX及HMX炸药的太赫兹光谱分析[J].光电技术应用,2010,25(6):11-13.YAO B D,WANG G.Analysis of terahertz spectrum of explosives RDX and HMX[J].Electro-optic Technology Application,2010,25(6):11-13.(in Chinese)
[14]张泽,尚丽平,邓琥.基于LabVIEW的太赫兹时域光谱系统数据采集实现[J].太赫兹科学与电子信息学报,2014,12(4):491-495.ZHANG Z,SHANG L P,DENG H.Data acquisition realization of terahertz time-domain spectroscopy system based on LabVIEW[J].Journal of Terahertz Science and Electronic Information Technology,2014,12(4):491-495.(in Chinese)
[15]王秀敏.太赫兹时域谱提取样品光学参数的具体算法[J].北京建筑工程学院学报,2009,25(1):46-51.WANG X M.Method of extracting materials′optical parameter from terahertz time-domain spectroscopy[J].Journal of Beijing University of Civil Engineering and Architecture,2009,25(1):46-51.(in Chinese)
[16]吴猛,赵国忠,梁承森,等.基于LabVIEW的太赫兹时域光谱数据处理[J].现代科学仪器,2009,2(4):9-11.WU M,ZHAO G ZH,LIANG CH S,et al..Data processing of terahertz time domain spectroscopy based on LabVIEW[J].Modern Scientific Instrument,2009,2(4):9-11.(in Chinese)