A vector handheld frequency-domain sensor for UXO identification

Juan Pablo Fernández; Benjamin Barrowes; Kevin O'Neill; Irma Shamatava; Fridon Shubitidze

doi:10.1117/12.818812

4 May 2009 A vector handheld frequency-domain sensor for UXO identification

Juan Pablo Fernández, Benjamin Barrowes, Kevin O'Neill, Irma Shamatava, Fridon Shubitidze

Proceedings Volume 7303, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIV; 73030W (2009) https://doi.org/10.1117/12.818812
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

The GEM-3D⁺ sensor developed by Geophex, Ltd. is a new incarnation of their widely known GEM-3. The sensor provides the analyst with all three vector components of the secondary magnetic field over a wide range of frequencies. The GEM-3D⁺ features an innovative "beacon-based" positioning system that provides a full description of its location and orientation at every point without requiring any on-sensor hardware beyond an electronic compass. This enhances the usefulness of the instrument for dynamic surveying, This paper presents some methods and results related to UXO identification using the GEM-3D⁺. Our analyses exploit data provided by the sensor in both grid-based and dynamic measurements to characterize different objects, including metal spheres and actual UXO. For the data analysis we alternate between the dipole model and the more rigorous standardized excitation approach. We review some ill-conditioning issues encountered with the latter model and the different approaches that we use to overcome them. In applications, the availability of horizontal field components in the data allow us to identify UXO vs. non-UXO items while minimizing the nonnegligible effects of ground response.

Citation Download Citation

Juan Pablo Fernández, Benjamin Barrowes, Kevin O'Neill, Irma Shamatava, and Fridon Shubitidze "A vector handheld frequency-domain sensor for UXO identification", Proc. SPIE 7303, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIV, 73030W (4 May 2009); https://doi.org/10.1117/12.818812

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available