Physics, mathematics, and technology

2010 Issue №4

Back to the list Download the article

The detection of nuclear quadrupole resonance signals with limited data



The denoising method of the pulse nuclear quadrupole resonance (NQR) signals was investigated for the case of the small signal to noise ratio. The maximum entropy method of the autoregressive model was applied for the analysis of the experimental NQR data. The obtained results show the efficiency of proposed method in the conditions of the limited sampling rate for the limited time of the detection and digital signal sampling for the NQR detectors.


1. Miller J. B., Barrall G. A. Explosives Detection with Nuclear Quadrupole Reso­nance. American Scientist, vol.93, 50—57, 2005.

2. G. V. Mozzhukhin, S. V. Molchanov, G. S. Kupriyanova, A. V. Bodnya, V. V. Fedotov, Hao Guoxin, Jin Yanbo, Ren Tianliang, Zhang Guojin. The Detection of Industrial Explo­sives by the Quadrupole Resonance Method: Some Aspects of the Detection of Am­monium Nitrate and Trinitrotoluene; In:Explosives Detection using Magnetic and Nuclear Resonance Techniques. Series: NATO Science for Peace and Security Series. Subseries: NATO Science for Peace and Security Series B: Physics and Biophysics. Fraissard, Jacques; Lapina, Olga (Eds.) Springer 2009, 295 p., 231—244.

3. Сафин И. А., Осокин Д. Я. Ядерный квадрупольный резонанс в соединени­ях азота. М., 1977. С. 20.

4. NTNMR Reference Manual. Tecmag inc. URL:

5. Gregorovic A., Apih T. TNT detection with 14N NQR: Multipulse sequences and matched filter // Journal of Magnetic Resonance, 198 (2009), 215—221

6. P. A. Angelidis. Spectrum Estimation and the Fourier Transform in Imaging and Spectroscopy. Concepts in Magnetic Resonance, Vol. 8(5) 339—381 (1996).

7. Марпл.-мл. С. Л. Цифровой спектральный анализ и его приложения / пер. с англ. М., 1990.

8. Сергиенко А. Б. Цифровая обработка сигналов. СПб., 2002.

9. Burg I. P. Maximum Entropy Spectral Analysis. Proc. 37th Meeting of the So­ciety of Exploration Geophysicists. Oklahoma City, Okla., Оctober 1967.

10. Mozzhukhin G. V., Bodnya A. V., Fedotov V. V. et al. The Detection Of The Trin­itrotoluene By Pure Nuclear Quadrupole Resonance. Appl. Magnetic Resonance, 29, 2005, 293—298.

11. Синявский Н. Я. Известия вузов. Физика. 1990.  12. С. 91—92.