Dr. Roy F. Wiegert Profile

Dr. Roy F. Wiegert

Research Physicist at Naval Surface Warfare Ctr

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Proceedings Article | 5 May 2009 Paper

Magnetic STAR technology for real-time localization and classification of unexploded ordnance and buried mines

R. Wiegert

Proceedings Volume 7303, 73031U (2009) https://doi.org/10.1117/12.818288

KEYWORDS: Magnetism, Sensors, Magnetic sensors, Stars, Detection and tracking algorithms, Prototyping, Algorithm development, Signal processing, Land mines, Warfare

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A man-portable Magnetic Scalar Triangulation and Ranging ("MagSTAR") technology for Detection, Localization and Classification (DLC) of unexploded ordnance (UXO) has been developed by Naval Surface Warfare Center Panama City Division (NSWC PCD) with support from the Strategic Environmental Research and Development Program (SERDP). Proof of principle of the MagSTAR concept and its unique advantages for real-time, high-mobility magnetic sensing applications have been demonstrated by field tests of a prototype man-portable MagSTAR sensor. The prototype comprises: a) An array of fluxgate magnetometers configured as a multi-tensor gradiometer, b) A GPS-synchronized signal processing system. c) Unique STAR algorithms for point-by-point, standoff DLC of magnetic targets. This paper outlines details of: i) MagSTAR theory, ii) Design and construction of the prototype sensor, iii) Signal processing algorithms recently developed to improve the technology's target-discrimination accuracy, iv) Results of field tests of the portable gradiometer system against magnetic dipole targets. The results demonstrate that the MagSTAR technology is capable of very accurate, high-speed localization of magnetic targets at standoff distances of several meters. These advantages could readily be transitioned to a wide range of defense, security and sensing applications to provide faster and more effective DLC of UXO and buried mines.

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