Seismic array monitoring of mortar fire during the November 2005 ARL-NATO TG-53 field experiment at YPG

Thomas S. Anderson; David J. Fisk; John E. Fiori; Stephan N. Decato; Douglas A. Punt; N. Lamie

doi:10.1117/12.673729

19 May 2006 Seismic array monitoring of mortar fire during the November 2005 ARL-NATO TG-53 field experiment at YPG

Thomas S. Anderson, David J. Fisk, John E. Fiori, Stephan N. Decato, Douglas A. Punt, N. Lamie

Author Affiliations +

Proceedings Volume 6231, Unattended Ground, Sea, and Air Sensor Technologies and Applications VIII; 62310W (2006) https://doi.org/10.1117/12.673729
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

The U.S. Army Corps of Engineers Engineer Research and Development Center (ERDC) participated in a joint ARL-NATO TG-53 field experiment and data collection at Yuma Proving Ground, AZ, in early November 2005. Seismic and acoustic signatures from both muzzle blasts and impacts of small arms fire and artillery were recorded using seven seismic arrays and three acoustic arrays. Arrays composed of 12 seismic and 12 acoustic sensors each were located from 700 m to 18 km from gun positions. Preliminary analysis of signatures attributed to 60-mm, 81-mm, and 120-mm mortars recorded at a seismic-acoustic array 1.1 km from gun position are presented. Seismic and acoustic array f-k analysis is performed to detect and characterize the source signature. Horizontal seismic data are analyzed to determine efficacy of a seismic discriminant for mortar and artillery sources. Rotation of North and East seismic components to radial and transverse components relative to the source-receiver path provide maximum surface wave amplitude on the transverse component. Angles of rotation agree well with frequency-wavenumber (f-k) analysis of both seismic and acoustic signals. The spectral energy of the rotated transverse surface wave is observable on all caliber of mortars at a distance of 1.1 km and is a reliable source discriminant for mortar sources at this distance.

Citation Download Citation

Thomas S. Anderson, David J. Fisk, John E. Fiori, Stephan N. Decato, Douglas A. Punt, and N. Lamie "Seismic array monitoring of mortar fire during the November 2005 ARL-NATO TG-53 field experiment at YPG", Proc. SPIE 6231, Unattended Ground, Sea, and Air Sensor Technologies and Applications VIII, 62310W (19 May 2006); https://doi.org/10.1117/12.673729

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KEYWORDS

Acoustics

Sensors

Artillery

Seismic sensors

Data acquisition

Signal to noise ratio

Meteorology

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