| Title | Frequency Selective Detection of Nuclear Quadrupole Resonance Signals |
| Authors | Andreas Jakobsson, Magnus Mossberg, Michael D. Rowe, John A. S. Smith |
| Full-text | Available as PDF, Restricted Access |
| Alternative Location | http://ieeexplore.ieee.org/..., Restricted Access |
| Alternative Location | http://dx.doi.org/10.1109/T... |
| Publication | IEEE Transactions on Geoscience and Remote Sensing |
| Year | 2005 |
| Volume | 43 |
| Issue | 11 |
| Pages | 2659 - 2665 |
| Document type | Article |
| Status | Published |
| Quality controlled | Yes |
| Language | eng |
| Publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS |
| Abstract English | Nuclear quadrupole resonance (NQR) offers an unequivocal method of detecting and identifying both hidden explosives, such as land mines, and a variety of narcotics. Unfortunately, the practical use of NQR is restricted by a low signal-to-noise ratio (SNR), and means to improve the SNR are vital to enable a rapid, reliable, and convenient system. In this paper, we introduce a frequency-selective approximate maximum-likelihood (FSAML) detector, operating on a subset of the available frequencies, making it robust to the typically present narrow-band interference. The method exploits the inherent temperature dependency of the NQR frequencies as a way to enhance the SNR. Numerical evaluations, using both simulated and real NQR data, indicate a significant gain in probability of accurate detection as compared to a current state-of-the-art approach. |
| Keywords | MAGNETIC-RESONANCE, NOISE, |
| ISBN/ISSN/Other | ISSN: 0196-2892 |
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