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Information × Registration Number 0223U001114, 0120U101249 , R & D reports Title Development of NQR hardware and software applications for explosives and narcotics detection popup.stage_title Head Samila Andrii P., Доктор технічних наук Registration Date 25-01-2023 Organization Yuriy Fedkovych Chernivtsi National University popup.description2 From the analysis of the effectiveness of physical methods and electronic means of pulsed Fourier spectroscopy of nuclear quadrupole resonance 14N and 35Cl carried out during the implementation of the project, it was established that, in principle, NQR detection of these isotopes is possible using pulsed or continuous techniques, and in the latter they can be successfully used as regenerative and superregenerative methods. autodyne sensors. However, due to the excessively weak intensity of the resonant signals of the 14N isotope, the continuous technique is of little use for portable search systems. The structural and functional synthesis of radio-electronic means of nuclear quadrupole resonance spectroscopy has been carried out and it has been established that the detector of explosives and narcotic substances can be implemented on the basis of the basic structure of a single-coil coherent pulsed Fourier spectrometer. Certain difficulties were associated with the need to detect weak microvolt signals of the decay of free induction in the short-wave frequency range (resonance frequency 3.41 MHz), oversaturated with signals and interference from various sources of electromagnetic radiation. A number of studies have provided the solution of an important scientific and applied problem - improving the signal characteristics (sensitivity, accuracy) while maintaining the energy characteristics (intensity of radio frequency radiation) of radio electronic means of pulsed nuclear quadrupole resonance spectroscopy by synthesizing their structural, configuration and circuit diagrams. For the first time, hardware and software tools for detecting explosives and narcotic substances based on a digital transmit-receive radio frequency path were developed and configuration structures of programmable logic integrated circuits were synthesized, which ensured the implementation of multipulse sequences for Fourier analysis of samples with low nitrogen concentrations. Product Description popup.authors Haliuk Serhii D. Gres Oleksandr V Kazemirs'kyy Taras Anatoliyovich Kosovan Hryhorii V. Krulikovskyi Oleh V. Rusyn Volodymyr B Khobzei Mykola M. popup.nrat_date 2023-01-25 Close