干旱区生态环境知识资源中心(Arid): Utilizing Seismic/Acoustic Sensors to Protect Secure Facilities from Underground Intrusion.

Arid

报告编号	ADA505829
	Utilizing Seismic/Acoustic Sensors to Protect Secure Facilities from Underground Intrusion.
	McKenna, J. R; Kelley, J. R; Berry, T. E; Rowan, J. R; Wakeley, L. D.
英文摘要	A seismic/acoustic array was developed to detect activity in clandestine tunnels. The geologic setting of the area that encloses clandestine tunneling activity can preclude use of traditional tunnel-detection technologies such as ground-penetrating radar (GPR). Properties of the sediments at the study site are attributable to original environment of deposition and subsequent natural and human-caused modifications. The resulting lateral and vertical variability in critical soil properties confounded GPR and electromagnetic techniques, but did not appear to have a negative impact on propagation of seismic/acoustic signals from digging and movement within a test tunnel. The team developed algorithms that distinguish the signals from digging and human movement from those of surface activity. Prolonged rainfall at the tunnel site caused an increase in signal amplitude, and allowed the team to quantify the signal changes from the full range of mechanical and Soldier noise on a Forward Operating Base (FOB). Understanding the impacts of variability in soil density, moisture content, and grain size may allow further refinement of the algorithm.
英文关键词	Acoustic arrays Tunneling Sediments Seismic detection Sand Soil mechanics Acoustic signals Geophysics Deserts Seismic signatures Soil tests Grain size Off the shelf equipment Geophones Algorithms Symposia
出版年	2008
语种	英语
国家	United States
来源学科分类	48G - Hydrology & Limnology ; 63A - Acoustic Detection ; 63I - Seismic Detection
URL	http://r.cnki.net/KCMS/detail/detail.aspx?DbCode=KJBG&dbname=KJBGW&filename=59fb06e631c97d1d549e086e
来源机构	Non Paid ADAS
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/273599
推荐引用方式 GB/T 7714	McKenna, J. R,Kelley, J. R,Berry, T. E,et al. Utilizing Seismic/Acoustic Sensors to Protect Secure Facilities from Underground Intrusion.,2008.