MPV-II: an enhanced vector man-portable EMI sensor for UXO identification

Juan Pablo Fernández; Benjamin Barrowes; Alex Bijamov; Tomasz Grzegorczyk; Nicolas Lhomme; Kevin O'Neill; Irma Shamatava; Fridon Shubitidze

doi:10.1117/12.884085

23 May 2011 MPV-II: an enhanced vector man-portable EMI sensor for UXO identification

Juan Pablo Fernández, Benjamin Barrowes, Alex Bijamov, Tomasz Grzegorczyk, Nicolas Lhomme, Kevin O'Neill, Irma Shamatava, Fridon Shubitidze

Author Affiliations +

Proceedings Volume 8017, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVI; 801707 (2011) https://doi.org/10.1117/12.884085
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

The Man-Portable Vector (MPV) electromagnetic induction sensor has proved its worth and flexibility as a tool for identification and discrimination of unexploded ordnance (UXO). TheMPV allows remediation work in treed and rough terrains where other instruments cannot be deployed; it can work in survey mode and in a static mode for close interrogation of anomalies. By measuring the three components of the secondary field at five different locations, the MPV provides diverse time-domain data of high quality. TheMPV is currently being upgraded, streamlined, and enhanced to make it more practical and serviceable. The new sensor, dubbedMPV-II, has a smaller head and lighter components for better portability. The original laser positioning system has been replaced with one that uses the transmitter coil as a beacon. The receivers have been placed in a configuration that permits experimental computation of field gradients. In this work, after introducing the new sensor, we present the results of several identification/discrimination experiments using data provided by the MPV-II and digested using a fast and accurate new implementation of the dipole model. The model performs a nonlinear search for the location of a responding target, at each step carrying out a simultaneous linear least-squares inversion for the principal polarizabilities at all time gates and for the orientation of the target. We find that the MPV-II can identify standard-issue UXO, even in cases where there are two targets in its field of view, and can discriminate them from clutter.

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Juan Pablo Fernández, Benjamin Barrowes, Alex Bijamov, Tomasz Grzegorczyk, Nicolas Lhomme, Kevin O'Neill, Irma Shamatava, and Fridon Shubitidze "MPV-II: an enhanced vector man-portable EMI sensor for UXO identification", Proc. SPIE 8017, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVI, 801707 (23 May 2011); https://doi.org/10.1117/12.884085

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