Exploiting temperature dependency in the detection of NQR signals

Author

Jakobsson, Andreas ; Mossberg, Magnus ; Rowe, Michael D. ; Smith, John A S

Author_Institution

Dept. of Electr. Eng., Karlstad Univ., Sweden

Volume

54

Issue

5

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

1610

Lastpage

1616

Abstract

Nuclear quadrupole resonance (NQR) offers an unequivocal method of detecting and identifying land mines. Unfortunately, the practical use of NQR is restricted by the low signal-to-noise ratio (SNR), and the means to improve the SNR are vital to enable a rapid, reliable, and convenient system. In this paper, an approximate maximum-likelihood detector (AML) is developed, exploiting the temperature dependency of the NQR frequencies as a way to enhance the SNR. Numerical evaluation using both simulated and real NQR data indicate a significant gain in probability of accurate detection as compared with the current state-of-the-art approach.

Keywords

landmine detection; maximum likelihood detection; nuclear quadrupole resonance; signal detection; NQR signal detection; land mine detection; maximum-likelihood detector; nuclear quadrupole resonance; signal-to-noise ratio; Detectors; Explosives; Landmine detection; Maximum likelihood estimation; Nuclear magnetic resonance; Radar detection; Radio frequency; Signal detection; Soil; Temperature dependence; Detection; estimation; maximum likelihood (ML); nuclear quadrupole resonance (NQR);

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2006.871969

Filename

1621392