| EMI Array for Cued UXO Discrimination ESTCP MM-0601 Demonstration Data Report. APG Standardized UXO Test Site |
14 Jan 2010 |
76 pages |
| Authors:
G R Harbaugh; J B Kingdon; T Furuya; T H Bell; D A Steinhurst; NOVA RESEARCH INC ALEXANDRIA VA
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 | A new time-domain EMI sensor for the purpose of UXO classification under ESTCP project MM-0601 has been constructed and characterized. A vehicle-towed, 2m x 2m array of 25 of these sensors was demonstrated at the Aberdeen Test Center. The array was used as part of a two-step process for identifying and classifying buried metal targets where the anomalies for cued investigation were previously identified with a survey system. The resultant ... |
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| Quantification of Noise Sources in EMI Surveys Technology Demonstration Report Army Research Laboratory Blossom Point Facility, Maryland July - September, 2006 |
14 Jan 2010 |
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| Authors:
G R Harbaugh; D A Steinhurst; M Howard; B J Barrow; J T Miller; T H Bell; NAVAL RESEARCH LAB WASHINGTON DC
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 | This demonstration was conducted at the Army Research Laboratory Blossom Point Facility between July and September 2006. The magnitudes and effects of several types of background and/or noise sources on the data collected with several commonly used EMI sensors were measured. These noise sources included ground response/geology, inherent sensor noise, external noise sources, motion-induced noise, and position uncertainty. Using Monte Carlo simulations, the impact of each noise source on the ... |
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| EM61-MK2 Response of Three Munitions Surrogates |
12-Mar-2009 |
31 pages |
| Authors:
H H Nelson; T Bell; J Kingdon; N Khadr; D A Steinhurst; NAVAL RESEARCH LAB WASHINGTON DC CHEMICAL DYNAMICS AND DIAGNOSTICS BRANCH
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| Target response coefficients for three pipe nipples intended as surrogates for commonly encountered UXO items were calculated from measurements made using the recently developed NRL Time-domain Electromagnetic Induction array. These response coefficients were used to predict the signals expected from an EM61-MK2, the most commonly used geophysical survey instrument for UXO, for each of the three items as a function of orientation and distance of the center of the item ... |
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| EM61-MK2 Response of Standard Munition Items |
06-Oct-2008 |
36 pages |
| Authors:
H H Nelson; T Bell; J Kingdon; N Khadr; D A Steinhurst; NAVAL RESEARCH LAB WASHINGTON DC CHEMICAL DYNAMICS AND DIAGNOSTICS BRANCH
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| Target response coefficients for 13 commonly encountered UXO items were calculated from measurements made using the recently developed NRL Time-domain Electromagnetic Induction array. These response coefficients were used to predict the signals expected from an EM61-MK2, the most commonly used geophysical survey instrument for UXO, for each of these items as a function of orientation and distance of the center of the item below the bottom coil of the sensor. ... |
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