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Correlation-based method for improvement of NQR signals utilizing signal shape information

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Abstract

In the correlation method the signal shape information can be utilized for detection of weak signals, hidden in the noise. We tested the advantages, drawbacks and some practical features of the method applied to magnetic resonance detection. The influence of the signal width, shape and similarity to the template on the correlation function was studied by numerical simulation. The findings were applied to the optimization of the template for improved localization of a noisy14N nuclear quadrupole resonance (NQR) line in NaNO2 during repetitive scans by a superregenerative spectrometer. The value of the correlation method in faster NQR intensity evaluation was also confirmed.

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  1. Institute of Mathematics, Physics and Mechanics and Faculty of Mathematics and Physics, University of Ljubljana, P.O. Box 2964, 1000, Ljubljana, Slovenia

    J. Pirnat & Z. Trontelj

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  1. J. Pirnat
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  2. Z. Trontelj
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Pirnat, J., Trontelj, Z. Correlation-based method for improvement of NQR signals utilizing signal shape information. Appl. Magn. Reson. 27, 343–357 (2004). https://doi.org/10.1007/BF03166328

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  • DOI: https://doi.org/10.1007/BF03166328

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