声-地震耦合探雷技术分析
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摘要
根据声-地震耦合原理,分析地震波与地雷的机械作用,并设计一个基于地震检波器串的探雷实验系统。把高顺性雷体与其上方的土壤视作一个质量-弹簧系统,用解析法分析其谐振机理。采用扬声器发出可扫频的单音正弦波穿透到地下土壤,作为系统信号激励源,采用地震检波器串测出地表震动速度。根据有无地雷处的地表震动速度幅频特性曲线,分析地雷对地表震动的影响。实验结果显示,地雷上方的地表震动速度要明显高于没有地雷的情况,该系统可用于声波探雷的进一步研究。
The mechanical interaction between the induced seismic waves and landmines was analyzed according to acoustic-to-seismic coupling theory.And a geophone array based experimental system for landmine detection was developed.By modeling a compliant mine and the soil on top of it as a mass-spring system,analytic method was adopted to study the resonance mechanism of the system.A loudspeaker was employed as energy source to insonify a swept sine tone over the soil.We also used a geophone array to measure the vibration velocity of the ground surface. In order to analysis the landmine effect on the surface vibration,the magnitude spectra curves of the measured velocity values on-and-off mines were plotted.The results showed that the data measured on mine is much bigger than that off target and the proposed system can be applied to further investigation of acoustic landmines detection.
The mechanical interaction between the induced seismic waves and landmines was analyzed according to acoustic-to-seismic coupling theory.And a geophone array based experimental system for landmine detection was developed.By modeling a compliant mine and the soil on top of it as a mass-spring system,analytic method was adopted to study the resonance mechanism of the system.A loudspeaker was employed as energy source to insonify a swept sine tone over the soil.We also used a geophone array to measure the vibration velocity of the ground surface. In order to analysis the landmine effect on the surface vibration,the magnitude spectra curves of the measured velocity values on-and-off mines were plotted.The results showed that the data measured on mine is much bigger than that off target and the proposed system can be applied to further investigation of acoustic landmines detection.
引文
1 Sabatier J M,Xiang N.An investigation of acoustic-to- seismic coupling to detect buried anti-tank landmines. IEEE Trans.Geosci.Remote Seas,2001;39(6):1146—1154
2 Sabatier J M,Xiang N.Laser-Doppler based acoustic-to- seismic detection of buried mines.In:Dubey A.C.,Harvey J.F.,Broach J.T.,et al.eds.,Conference on Detection and Remediation Technologies for Mines and Minelike Targets IV,Proc.SPIE,Orlando,Fla,USA,1999;3710:215—222
3 Xiang N,Sabatier J M.Land mine detection measurements using acoustic to seismic coupling.In:Dubey A.C.,Har- vey J.F.,Broach J.T.,et al.eds.,Conference on Detection and Remediation Technologies for Mines and Minelike Tar- gets IV,Proc.SPIE,Seattle,2000;4308:645—655
4 Donskoy D,Ekimov A,Sedunov N et al.Nonlinear seismo-acoustic land mine detection and discrimination.J. Acoust.Soc.Am.,2002;111(6):2705—2714
5 Scott W R,Martin J S,Larson G.Experimental model for a seismic landmine detection system.IEEE Trans.Geosci. Remote Seas.,2001;39(6):1155—1164
6 Xiang N,Sabatier J M.An experimental study on antiper- sonnel landmine detection using acoustic-to-seismic cou- pling.J.Acoust.Soc.Am.,2003;113(3):1333—1341
7 Donskoy D,Sedunov N,Ekimov A et al.Optimization of seismo-acoustic land mine detection using dynamic me- chanical impedances of mines and soil.In:Dubey A.C., Harvey J.F.,Broach J.T.,et al.eds.,Detection and Re- mediation Technologies for Mines and Minelike Targets VI, Orlando,USA,Proceedings of SPIE,2001;4394:575—582
8 Sabatier J M,Bass H E,Bolen L N.Acoustically induced seismic waves.J.Acoust.Soc.Am.,1986;80(2):646—649
9 Biot M A.Theory of propagation of elastic waves in a fluid- saturated porous solid.I.Low-frequency range.J.Acoust. Soc.Am.,1956;28(2):168—178
10 Blot M A.Theory of propagation of elastic waves in a fluid-saturated porous solid.Ⅱ.Higher-frequency range. J.Acoust.Soc.Am.,1956;28(2):179—191
11 Sabatier J M,Bass H E,Bolen L N.The interaction of airborne sound with the porous ground:The theoretical formulation.J.Acoust.Soc.Am.,1986;79(5):1345—1352
12 Hickey C J,Sabatier J M.Measurements of two types of dilatational waves in an air-filled unconsolidated sand.J. Acoust.Soc.Am.,1997;102(1):128—136
13 Bass H E,Sabatier J M.Acoustic to seismic coupling and physical measurements.In:Dubey A C,Harvey J F, Broach J T et al,Eds.,Detection and Remediation Tech- nologies for Mines and Minelike Targets V,Proceedings of SPIE,Seattle,2000;4038:604—609
14杨顶辉．双相各向异性介质中弹性波方程的有限元解法及波场模拟．地球物理学报，2002；45(4)：575—583
15裴正林，三维双相各向异性介质弹性波方程交错网格高阶有限差分法模拟．中国石油大学学报(自然科学版)，2006；30(2)：16—20
16孟庆生，何樵登，朱建伟等．基于BISQ模型双相各向同性介质中地震波数值模拟．吉林大学学报(地球科学版)，2003；33(2)：217—221
17张丽琴，於文辉，王家映．Biot耦合模式波的动力学特征．西北地震学报，2004；26(2)：97—107
18 Haupt R W,Rolt K D.Standoff Acoustic Laser Technique to Locate Buried Land Mines.Lincolin Laboratory Jour- nal,2005;15(1):3—22
19朱维庆，冯雷，王长红等．声相关载体速度测量理论和信号处理方法．声学学报，2006；31(4)：289—296
20朱维庆，朱敏，王军伟等．水声高速图像传输信号处理方法．声学学报，2007；32(5)：385—397
21范军，卓琳凯．水下目标回波特性计算的图形声学方法．声学学报，2006；31(6)：511—516
22万琳，范军，汤渭霖．海底掩埋物的目标强度和回声信混比．声学学报，2006；31(2)：151—157
2 Sabatier J M,Xiang N.Laser-Doppler based acoustic-to- seismic detection of buried mines.In:Dubey A.C.,Harvey J.F.,Broach J.T.,et al.eds.,Conference on Detection and Remediation Technologies for Mines and Minelike Targets IV,Proc.SPIE,Orlando,Fla,USA,1999;3710:215—222
3 Xiang N,Sabatier J M.Land mine detection measurements using acoustic to seismic coupling.In:Dubey A.C.,Har- vey J.F.,Broach J.T.,et al.eds.,Conference on Detection and Remediation Technologies for Mines and Minelike Tar- gets IV,Proc.SPIE,Seattle,2000;4308:645—655
4 Donskoy D,Ekimov A,Sedunov N et al.Nonlinear seismo-acoustic land mine detection and discrimination.J. Acoust.Soc.Am.,2002;111(6):2705—2714
5 Scott W R,Martin J S,Larson G.Experimental model for a seismic landmine detection system.IEEE Trans.Geosci. Remote Seas.,2001;39(6):1155—1164
6 Xiang N,Sabatier J M.An experimental study on antiper- sonnel landmine detection using acoustic-to-seismic cou- pling.J.Acoust.Soc.Am.,2003;113(3):1333—1341
7 Donskoy D,Sedunov N,Ekimov A et al.Optimization of seismo-acoustic land mine detection using dynamic me- chanical impedances of mines and soil.In:Dubey A.C., Harvey J.F.,Broach J.T.,et al.eds.,Detection and Re- mediation Technologies for Mines and Minelike Targets VI, Orlando,USA,Proceedings of SPIE,2001;4394:575—582
8 Sabatier J M,Bass H E,Bolen L N.Acoustically induced seismic waves.J.Acoust.Soc.Am.,1986;80(2):646—649
9 Biot M A.Theory of propagation of elastic waves in a fluid- saturated porous solid.I.Low-frequency range.J.Acoust. Soc.Am.,1956;28(2):168—178
10 Blot M A.Theory of propagation of elastic waves in a fluid-saturated porous solid.Ⅱ.Higher-frequency range. J.Acoust.Soc.Am.,1956;28(2):179—191
11 Sabatier J M,Bass H E,Bolen L N.The interaction of airborne sound with the porous ground:The theoretical formulation.J.Acoust.Soc.Am.,1986;79(5):1345—1352
12 Hickey C J,Sabatier J M.Measurements of two types of dilatational waves in an air-filled unconsolidated sand.J. Acoust.Soc.Am.,1997;102(1):128—136
13 Bass H E,Sabatier J M.Acoustic to seismic coupling and physical measurements.In:Dubey A C,Harvey J F, Broach J T et al,Eds.,Detection and Remediation Tech- nologies for Mines and Minelike Targets V,Proceedings of SPIE,Seattle,2000;4038:604—609
14杨顶辉．双相各向异性介质中弹性波方程的有限元解法及波场模拟．地球物理学报，2002；45(4)：575—583
15裴正林，三维双相各向异性介质弹性波方程交错网格高阶有限差分法模拟．中国石油大学学报(自然科学版)，2006；30(2)：16—20
16孟庆生，何樵登，朱建伟等．基于BISQ模型双相各向同性介质中地震波数值模拟．吉林大学学报(地球科学版)，2003；33(2)：217—221
17张丽琴，於文辉，王家映．Biot耦合模式波的动力学特征．西北地震学报，2004；26(2)：97—107
18 Haupt R W,Rolt K D.Standoff Acoustic Laser Technique to Locate Buried Land Mines.Lincolin Laboratory Jour- nal,2005;15(1):3—22
19朱维庆，冯雷，王长红等．声相关载体速度测量理论和信号处理方法．声学学报，2006；31(4)：289—296
20朱维庆，朱敏，王军伟等．水声高速图像传输信号处理方法．声学学报，2007；32(5)：385—397
21范军，卓琳凯．水下目标回波特性计算的图形声学方法．声学学报，2006；31(6)：511—516
22万琳，范军，汤渭霖．海底掩埋物的目标强度和回声信混比．声学学报，2006；31(2)：151—157
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