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Accession Number ADA580138
Title Electromagnetic Induction Sensing of UneXploded Ordnance with Pedemis.
Publication Date Oct 2012
Media Count 14p
Personal Author B. E. Barrowes F. Shubitidze K. O'Neill P. Fernandez T. M. Grzegorczyk
Abstract Pedemis (PortablE Decoupled Electromagnetic Induction Sensor) is a timedomain handheld electromagnetic induction (EMI) instrument with the intended purpose of improving the detection and classification of UneXploded Ordnance (UXO). Pedemis sports nine coplanar transmitters (the Tx assembly) and nine triaxial receivers held in a fixed geometry with respect to each other (the Rx assembly) but with that Rx assembly physically decoupled from the Tx assembly allowing flexible data acquisition modes and deployment options. The data acquisition (DAQ) electronics consists of the National Instruments (NI) cRIO platform which is much lighter and more energy efficient that prior DAQ platforms. Pedemis has successfully acquired initial data, and inversion of the data acquired during these initial tests has yielded satisfactory polarizabilities of a spherical target. In addition, precise positioning of the Rx assembly has been achieved via position inversion algorithms based solely on the data acquired from the receivers during the 'on-time' of the primary field. Pedemis has been designed to be a flexible yet user friendly EMI instrument that can survey, detect and classify targets in a one pass solution. In this paper, the Pedemis instrument is introduced along with its operation protocols, initial data results, and current status.
Keywords Buried objects
Electromagnetic induction
Emi(Electromagnetic induction)
Pedemis(Portable decoupled electromagnetic induction sensor)
Unexploded ammunition
Uxo(Unexploded ordnance)
Vector receivers

Source Agency Non Paid ADAS
NTIS Subject Category 79A - Ammunition, Explosives, & Pyrotechnics
46 - Physics
Corporate Author Engineering Research and Development Center, Hanover, NH. Cold Regions Research and Engineering Lab.
Document Type Technical report
Title Note Conference paper.
NTIS Issue Number 1325
Contract Number MR-1712

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