On-Time 3D Time-Domain EMI and Tensor Magnetic Gradiometry for UXO Detection and Discrimination
Abstract
Project MM-1328 began as "Evaluation, Modification, and Testing of the Very Early Time Electromagnetic (VETEM) System, the High Frequency Sounder (HFS), and the Tensor Magnetic Gradiometer System (TMGS) for UXO Detection, Imaging, and Discrimination." We recommended that the TMGS be reconfigured and that a new multi-axis EMI system be developed. The new EMI system was named "ALLTEM" because it is a time domain electromagnetic induction (TEM) system whose triangle-wave excitation is on all the time. Project MM-1328 was continued with the revised project title, "On-Time 3D Time-Domain EMI and Tensor Magnetic Gradiometry for UXO Detection and Discrimination." Field tests of the revised TMGS and ALLTEM were carried out in October/November of 2005 and May of 2006. Colorado School of Mines and the USGS developed data inversion algorithms to solve for identifying target parameters. ALLTEM moving-platform survey-mode data are often of sufficient quality that reliable target parameters can be obtained to classify targets as likely UXO or non-UXO. This capability improves field efficiency.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 04, 2008
- Accession Number
- ADA603927
Entities
People
- Craig W. Moulton
- David L. Wright
- David V. Smith
- Misac N. Nabighian
- Robert E. Bracken
- Theodore H. Asch
- Trevor P. Irons
- Yaoguo Li