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Open-File Report 2013–1228

Prepared in cooperation with the U.S. Department of Defense Strategic Environmental Research and Development Program

Active Tensor Magnetic Gradiometer System Final Report for Project MM–1514

By David V. Smith, Jeffrey D. Phillips, and S. Raymond Hutton

Thumbnail of and link to report PDF (4.3 MB)Abstract

An interactive computer simulation program, based on physical models of system sensors, platform geometry, Earth environment, and spheroidal magnetically-permeable targets, was developed to generate synthetic magnetic field data from a conceptual tensor magnetic gradiometer system equipped with an active primary field generator. The system sensors emulate the prototype tensor magnetic gradiometer system (TMGS) developed under a separate contract for unexploded ordnance (UXO) detection and classification. Time-series data from different simulation scenarios were analyzed to recover physical dimensions of the target source. Helbig-Euler simulations were run with rectangular and rod-like source bodies to determine whether such a system could separate the induced component of the magnetization from the remanent component for each target. This report concludes with an engineering assessment of a practical system design.

First posted February 7, 2014

For additional information, contact:
Director, Crustal Geophysics and Geochemistry Science Center
U.S. Geological Survey
Box 25046, Mail Stop 964
Denver, CO 80225
http://crustal.usgs.gov/

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Suggested citation:

Smith, D.V., Phillips, J.D., and Hutton, S.R., 2014, Active tensor magnetic gradiometer system final report for Project MM–1514: U.S. Geological Survey Open-File Report 2013–1228, 39 p., http://dx.doi.org/10.3133/ofr20131228.

ISSN 2331-1258 (online)



Contents

Abstract

Introduction

Modeling and Simulations

Theory and Algorithms

Examples

Engineering Assessment

Summary

References Cited


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