NDLI: Magnetic sensors for buried minehunting from small unmanned underwater vehicles

Content Provider	IEEE Xplore Digital Library
Author	Clem, T. Allen, G. Bono, J. McDonald, R.J. Overway, D. Sulzberger, G. Kumar, S. King, D.
Copyright Year	2004
Description	Author affiliation: Naval Surface Warfare Center, Panama City, FL, USA (Clem, T.; Allen, G.; Bono, J.; McDonald, R.J.; Overway, D.; Sulzberger, G.)
Abstract	Optical identification, which can provide compelling confirmation that a proud sonar contact is a mine, is obviously not possible for fully buried mines. One interesting sensor-fusion concept under consideration to confirm buried sonar contacts is to reacquire the contacts at short range using an unmanned underwater vehicle (UUV) carrying a magnetic sensor and a bottom-looking sonar, such as the Buried Object Scanning Sonar (BOSS) developed by Florida Atlantic University. Two magnetic sensors are currently being developed by the Office of Naval Research (ONR) for buried minehunting. The Quantum Magnetics' Realtime Tracking Gradiometer (RTG) is a multichannel tensor gradiometer being developed using fluxgate technology. An existing RTG prototype has been integrated with an existing BOSS prototype onboard a tow body and underwater tow tests have been conducted over targets to demonstrate the effectiveness of the BOSS/RTG fusion concept. A new miniaturized version of the RTG is being developed for operation onboard relatively small unmanned underwater vehicles (UUVs). The Polatomic Laser Scalar Gradiometer (LSG) is a multichannel scalar magnetic sensor designed to operate on relatively small UUVs. It is based on the electron-spin resonance (ESR) properties of helium-4 gas in accordance with the Zeeman effect, very similar in concept to the US Navy's AN/ASQ-208. The LSG has attained increased sensitivity over the AN/ASQ-81 by the use of a laser in place of incoherent light for optical pumping. In this paper, the sensors and system configurations being pursued are discussed. Relevant tests that have been conducted for individual sensors and sensor combinations and test results are described. Current status of these developments and future plans to test and demonstrate these technologies and concepts are presented.
Starting Page	902
Ending Page	910
File Size	869921
Page Count	9
File Format	PDF
ISBN	0780386698
DOI	10.1109/OCEANS.2004.1405594
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-09
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic sensors Underwater vehicles Sonar Testing Optical pumping Prototypes Gas lasers Sensor phenomena and characterization Optical sensors Buried object detection
Content Type	Text
Resource Type	Article

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