Buried explosive hazard characterization using advanced magnetic and electromagnetic induction sensors

Jonathan S. Miller; Gregory Schultz; Vishal Shah

doi:10.1117/12.2016258

7 June 2013 Buried explosive hazard characterization using advanced magnetic and electromagnetic induction sensors

Jonathan S. Miller, Gregory Schultz, Vishal Shah

Proceedings Volume 8709, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVIII; 870909 (2013) https://doi.org/10.1117/12.2016258
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

Advanced electromagnetic induction arrays that feature high sensitivity wideband magnetic field and electromagnetic induction receivers provide significant capability enhancement to landmine, unexploded ordnance, and buried explosives detection applications. Specifically, arrays that are easily and quickly configured for integration with a variety of ground vehicles and mobile platforms offer improved safety and efficiency to personnel conducting detection operations including route clearance, explosive ordnance disposal, and humanitarian demining missions. We present experimental results for explosives detection sensor concepts that incorporate both magnetic and electromagnetic modalities. Key technology components include a multi-frequency continuous wave EMI transmitter, multi-axis induction coil receivers, and a high sensitivity chip scale atomic magnetometer. The use of multi-frequency transmitters provides excitation of metal encased threats as well as low conductivity non-metallic explosive constituents. The integration of a radio frequency tunable atomic magnetometer receiver adds increased sensitivity to lower frequency components of the electromagnetic response. This added sensitivity provides greater capability for detecting deeply buried targets. We evaluate the requirements for incorporating these sensor modalities in forward mounted ground vehicle operations. Specifically, the ability to detect target features in near real-time is critical to non-overpass modes. We consider the requirements for incorporating these sensor technologies in a system that enables detection of a broad range of explosive threats that include both metallic and non-metallic components.

Citation Download Citation

Jonathan S. Miller, Gregory Schultz, and Vishal Shah "Buried explosive hazard characterization using advanced magnetic and electromagnetic induction sensors", Proc. SPIE 8709, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVIII, 870909 (7 June 2013); https://doi.org/10.1117/12.2016258

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KEYWORDS

Sensors

Receivers

Electromagnetic coupling

Magnetism

Explosives

Transmitters

Magnetic sensors

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