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- W4367145587 abstract "The results of numerical modeling of the interferometric signal processing for broadband sources (200–300 Hz) moving in shallow water waveguide is presented in the paper. Each source creates in receiver point a stable interference pattern of the intensity distribution (interferogram) in the frequency-time domain. The 2D Fourier Transformation (2D-FT) is applied to analyze the superposition of several interferograms of the sources moving in waveguide. 2D-FT of interferogram—hologram is superposition of the holograms of the sources moving in waveguide. The source hologram allows to coherently accumulate the sound intensity of the source interferogram in a relatively small area as focal spots. The sources can be separated when the sources holograms spots are not overlapped and thus can be filtered. The information about each source is in separated hologram. So, separated hologram allows to estimate source range, its velocity and direction (S. Pereselkov and V. Kuz’kin, JASA 151(2), 666–676). Within numerical experiment the separation of three noise sources with different intensities moving in different directions with different velocities is considered.The error of estimation of parameters of each source is used as a criterion of resolving efficiency of proposed method. [This study was supported by RFBR 19-29-06075, МК-4846.2022.4.]" @default.
- W4367145587 created "2023-04-28" @default.
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- W4367145587 date "2023-03-01" @default.
- W4367145587 modified "2023-10-01" @default.
- W4367145587 title "Low-frequency holographic signal processing for moving sources separation in shallow water waveguide" @default.
- W4367145587 doi "https://doi.org/10.1121/10.0018931" @default.
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