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Comparison of the Spatial-Energy Profiles of the Visibility Zones of Active-Pulse Vision Systems for Two Methods of Observation

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Journal of Applied Spectroscopy Aims and scope

The features of the formation of the spatial-energy profiles (SEP) of the visibility zones for two methods of observation (MO) are compared by numerical simulation taking the energy of the noise threshold Ent into account. It is confirmed for both MOs that the relationship previously used in the literature in which the length of the visibility zone (VZ) is uniquely determined by the sum of the lengths of the illumination and strobe (photodetector exposure) pulses is valid provided that the maximum value of the signal contrast attained within the confines of the VZ is close to unity. For the second MO the transformation of the SEP for relatively short working distances into a short convex asymmetric peak at half height, for which the maximum in the limiting case is shifted to the beginning of the VZ, is studied in detail. This is explained by the predominant influence of the so-called spatial factor on the formation of the SEP. Despite some spatial shift of the SEP relative to one another for the first and second MO in the case when the durations of the illumination and strobe pulses are unequal, the maximum values of the recorded signals and their contrast, as well as the length of the visibility zone for both MO for the typical parameters in most cases are practically the same. The particular case when the duration of the illumination pulse is shorter than that of the strobe pulse, the experimentally obtained SEPs of the VZ for the first and second MO confirm the results of the calculations.

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Authors and Affiliations

  1. SSPA “Optics, Optoelectronics, and Laser Technology, Minsk, Belarus

    B. F. Kuntsevich, I. N. Puchkouski & S. S. Shavel

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  1. B. F. Kuntsevich
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  2. I. N. Puchkouski
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  3. S. S. Shavel
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Correspondence to B. F. Kuntsevich.

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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 90, No. 5, pp. 793–802, September–October, 2023

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Kuntsevich, B.F., Puchkouski, I.N. & Shavel, S.S. Comparison of the Spatial-Energy Profiles of the Visibility Zones of Active-Pulse Vision Systems for Two Methods of Observation. J Appl Spectrosc 90, 1082–1091 (2023). https://doi.org/10.1007/s10812-023-01636-1

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