Development of a quadrupole resonance confirmation system

Barrall, Geoffrey A.; Derby, Kevin; Drew, A. J.; Ermolaev, K. V.; Huo, Shouqin; Lathrop, D. K.; Petrov, T.; Steiger, Matthew; Stewart, S. H.; Turner, Peter

doi:10.1117/12.565157

Cited by 5 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In early 2002, QM successfully completed two blind tests of the QRCS with two qualifications 30 . First, the 2002 system was overwhelmed by radio frequency interference (RFI) when operating in high RFI conditions such as those encountered near power lines and at night.…”

Section: Review Of Previously Presented Resultsmentioning

confidence: 99%

Advances in the engineering of quadrupole resonance landmine detection systems

Barrall¹,

Arakawa²,

Barabash³

et al. 2005

SPIE Proceedings

View full text Add to dashboard Cite

Advances in the engineering of Quadrupole Resonance (QR) sensors for landmine detection have resulted in improved performance, as well as massive reductions in power, size and weight. The next generation of vehicle-mounted QR confirmation sensors is over an order of magnitude smaller and more power efficient than the system fielded in 2002 and 2003. Early prototypes have also demonstrated a significant improvement in TNT sensitivity, and similar improvements are anticipated in RDX sensitivity during Q1 2005. Blind test results from 2003 confirm the radio frequency interference and piezo-electric ringing immunity of the Quantum Magnetics QR Confirmation Sensor (QRCS).

show abstract

Section: Review Of Previously Presented Resultsmentioning

confidence: 99%

Advances in the engineering of quadrupole resonance landmine detection systems

Barrall¹,

Arakawa²,

Barabash³

et al. 2005

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

“…From the intensity of the signal it is also possible to estimate quantity or depth. Remote RF antennas can be designed which can detect signals from suitable materials at distances of approximately 20 cm (Barrall et al, 2004). Furthermore, signals are only seen in solids or solid-like materials, and because of the highly compound-specific nature of NQR frequencies, there is little, if any, false alarms from other nitrogen-containing materials which may be present in the mine casing or the surrounding terrain.…”

Section: Fig 1; Chemical Structures Of Rdx and Tntmentioning

confidence: 99%

Landmine Detection by Nuclear Quadrupole Resonance (NQR)

Deas¹,

Cervantes²,

Schaedel³

2004

View full text Add to dashboard Cite

Landmines continue to threaten U.S. and allied forces. Conventional mine detection sensors, such as ground penetrating radar (GPR), can give many false alarms due to natural and manmade objects in the ground having mine-like characteristics to these sensors. This can result in a slow advance rate as the forces must deal with these false alarms. Nuclear quadrupole resonance (NQR) technology is being developed by the U.S. Army for application to landmine detection as a confirmation sensor to verify the presence of landmines and eliminate false alarms from GPR. NQR technology has the capability to detect and discriminate explosives from other items in the environment and it can discriminate among the different types of explosives found in landmines.Recent field testing of an early prototype NQR landmine detection system developed by Quantum Magnetics, Inc. (QM) demonstrated high probability of detection and probability of false alarm rejection at scan times of about 20 seconds for TNT and a few seconds for RDX at 20°C. Current NQR research and development by the Army is focused on reducing the scan time for TNT.In 2004, the U.S. Army RDECOM CERDEC Night Vision and Electronic Sensors Directorate (NVESD) established a laboratory to investigate advanced NQR techniques for detection of landmines at Fort Belvoir, Virginia. The laboratory was established in collaboration with the U.S. Naval Research Laboratory (NRL), QM, King's College, London and the UK Defence Science and Technology Laboratory (Dstl). This paper reviews the basics of NQR technology, describes the capabilities of the laboratory at NVESD, and discusses the use of explosive simulants and proposed methods of reducing the scan time.

show abstract

Joint Optimization of the Number of Pulses and the Relaxation Pause in the Combined Multiple-Pulse Spin-Locking Sequence for Detecting Explosives by NQR

Mefed

2009

Appl Magn Reson

View full text Add to dashboard Cite

Development of a quadrupole resonance confirmation system

Cited by 5 publications

References 25 publications

Advances in the engineering of quadrupole resonance landmine detection systems

Advances in the engineering of quadrupole resonance landmine detection systems

Landmine Detection by Nuclear Quadrupole Resonance (NQR)

Joint Optimization of the Number of Pulses and the Relaxation Pause in the Combined Multiple-Pulse Spin-Locking Sequence for Detecting Explosives by NQR

Contact Info

Product

Resources

About