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Title: Location estimation using a broadband electromagnetic induction array
Authors: Gürbüza A. C.
Scott Jr. W. R.
McClellan J. H.
Keywords: Depth estimation
Electromagnetic induction sensor
Location estimation
Orthogonal matching pursuit
Issue Date: 2009
Source: Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIV, 13 April 2009 through 17 April 2009, Orlando, FL, 76786
Abstract: A broadband quadrapole electromagnetic induction (EMI) array with one transmitter and three receiver coils is built for detecting buried metallic targets. In this paper, it is shown that the locations of multiple metallic targets including their depth and cross-range position can be estimated accurately with the EMI array using an orthogonal matching pursuit (OMP) approach. Conventional OMP approaches use measurement dictionaries generated for each possible target space point which results in huge dictionaries for the 3D location problem. This paper exploits the inherent shifting properties of the scanning system to reduce the size of the dictionary used in OMP and to lower the computation cost for possibly a real-time EMI location estimation system. The method is tested on both simulated and experimental data collected over metal spheres at different depths and accurate location estimates were obtained. This method allows EMI to be used as a pre-screener and results in valuable location estimates that could be used by a multi-modal GPR or other sensor for enhanced operation. © 2009 SPIE.
ISBN: 9780819475695
ISSN: 0277-786X
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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