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Proceedings Paper

Seismic array monitoring of mortar fire during the November 2005 ARL-NATO TG-53 field experiment at YPG
Author(s): Thomas S. Anderson; David J. Fisk; John E. Fiori; Stephan N. Decato; Douglas A. Punt; N. Lamie
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Paper 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.

Paper Details

Date Published: 19 May 2006
PDF: 9 pages
Proc. SPIE 6231, Unattended Ground, Sea, and Air Sensor Technologies and Applications VIII, 62310W (19 May 2006);
Show Author Affiliations
Thomas S. Anderson, USACE ERDC-CRREL (United States)
David J. Fisk, USACE ERDC-CRREL (United States)
John E. Fiori, USACE ERDC-CRREL (United States)
Stephan N. Decato, USACE ERDC-CRREL (United States)
Douglas A. Punt, USACE ERDC-CRREL (United States)
N. Lamie, USACE ERDC-CRREL (United States)

Published in SPIE Proceedings Vol. 6231:
Unattended Ground, Sea, and Air Sensor Technologies and Applications VIII
Edward M. Carapezza, Editor(s)

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