ULEMA: Ultra-Light ElectroMagnetic Array system for UXO detection and classification (2021)

PreviousNext You have accessSymposium on the Application of Geophysics to Engineering and Environmental Problems 2021ULEMA: Ultra-Light ElectroMagnetic Array system for UXO detection and classificationAuthors: Fridon ShubitidzeGia SaparishviliBen BarrowesTornike ShubitidzeMikheil PrishvinFridon ShubitidzeThayer School of Engineering, Dartmouth CollegeSearch for more papers by this author, Gia SaparishviliSubsurface Sensing Technology and Consulting, LLCSearch for more papers by this author, Ben BarrowesUSA Army ERDC, Cold Regions Research an Engineering LaboratorySearch for more papers by this author, Tornike ShubitidzeUSA Army ERDC, Cold Regions Research an Engineering LaboratorySearch for more papers by this author, and Mikheil PrishvinSubsurface Sensing Technology and Consulting, LLCSearch for more papers by this authorhttps://doi.org/10.4133/sageep.33-012 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract In recent years great strides have been made on the development, demonstration, production, and commercialization of advanced electromagnetic induction (EMI) systems for detection, localization, and classification of subsurface unexploded ordnances (UXO). These devices, such as commercial MM2x2, APEX, UltraTEM and others., have an unprecedented spatial resolution and a spectral range multi-static geophysical vector data set by providing arrays of transmitters and receivers in precisely known configurations. These systems, however, tend to be large and heavy and cannot be readily used in challenging terrain that does not allow vehicular access, such as marshy wetland, wooded and rocky areas. To overcome this limitation, here we introduce a new Ultra-Light Electromagnetic Array (ULEMA) for subsurface UXO detection and classification. The system consists of three 35 cm diameter small and one large transmitter loops, four receivers, weighing at about 7.5 pounds. The three small Tx coils, that produce up to 35 A-m2 moment, are designed to illuminate targets from different sites, and the large Tx coil, with up to 45 A-m2 moment, is used to enhance detection, location, and identification of deep targets. When the excitation pulse is turned off, the Rxs collect target responses at a sample rate of 500 kHz. The system operates in both static (cued) and dynamic modes, and outputs the raw transient decay measurements grouped into 30 logarithmically spaced time gates whose center times range from 20 μs to 10 ms. In the dynamic mode the system collects a series of closely spaced high quality data set whose processing with advanced classification models results in a fully classified dig list. In this presentation, detection, and classification performance of the ULEMA system will discussed and demonstrated. Keywords: electromagnetic, resolution, arrays, processingPermalink: https://doi.org/10.4133/sageep.33-012FiguresReferencesRelatedDetails Symposium on the Application of Geophysics to Engineering and Environmental Problems 2021ISSN (online):1554-8015Copyright: 2021 Pages: 349 publication data© 2021 Published in electronic format with permission by the Society of Exploration Geophysicists and Environment and Engineering Geophysical SocietyPublisher:Environmental & Engineering Geophysical Society HistoryPublished: 11 Jun 2021 CITATION INFORMATION Fridon Shubitidze, Gia Saparishvili, Ben Barrowes, Tornike Shubitidze, and Mikheil Prishvin, (2021), "ULEMA: Ultra-Light ElectroMagnetic Array system for UXO detection and classification," Symposium on the Application of Geophysics to Engineering and Environmental Problems Proceedings : 21-21. https://doi.org/10.4133/sageep.33-012 Plain-Language Summary KeywordselectromagneticresolutionarraysprocessingPDF DownloadLoading ...