Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Zong Wei Liu"'
Publikováno v:
Frontiers in Marine Science, Vol 9 (2022)
Pulsed signal trains comprising clicks, buzzes, and burst-pulses play important roles in the life activities of odontocetes, but they have not been distinguished in Indo-Pacific humpback dolphins. Underwater vocalizations of this species were recorde
Externí odkaz:
https://doaj.org/article/0cf03713d50548e7bcf86bc4a6561bc9
Publikováno v:
Applied Sciences, Vol 11, Iss 11, p 5046 (2021)
Array gain is investigated based on the acoustic channel characteristics manifested by the fluctuant transmission loss and decrease in the acoustic channel spatial coherence. An analytical expression is derived as the summation of the products of the
Externí odkaz:
https://doaj.org/article/4a0dccd0862a40c0ba2cc2a8c263def0
Publikováno v:
Applied Sciences, Vol 10, Iss 3, p 1005 (2020)
To localize a moving source in shallow water with a single hydrophone, a passive range localization method based on synthetic aperture beamforming is proposed. First, the horizontal wavenumber spectrum excited by the source is obtained by synthetic a
Externí odkaz:
https://doaj.org/article/08f160ac73424ce0931ae42c364719e8
Publikováno v:
The Journal of the Acoustical Society of America. 144:EL522-EL527
Underwater operational turbine noise emitted by China's first offshore wind farm in the East China Sea Bridge of Shanghai was measured and analyzed in this study. Two sensors were used in the measurement: a hydrophone recording the underwater sound a
Publikováno v:
Applied Sciences, Vol 11, Iss 5046, p 5046 (2021)
Applied Sciences
Volume 11
Issue 11
Applied Sciences
Volume 11
Issue 11
Array gain is investigated based on the acoustic channel characteristics manifested by the fluctuant transmission loss and decrease in the acoustic channel spatial coherence. An analytical expression is derived as the summation of the products of the
High-resolution bottom detection algorithm for a multibeam echo-sounder system with a U-shaped array
Publikováno v:
Acta Oceanologica Sinica. 37:78-84
High-resolution approaches such as multiple signal classification and estimation of signal parameters via rotational invariance techniques (ESPRIT) are currently employed widely in multibeam echo-sounder (MBES) systems for sea floor bathymetry, where
Publikováno v:
Key Engineering Materials. 715:48-53
Long rod has strong ability of penetrating into targets with high velocity because of the big ratio of L/D. In the process of the penetration, the resistance of target is so big that the deformation of the head of the projectile is severe. There are
Publikováno v:
2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO).
The noise radiated by a ship is modulated at a rate dictated by some parameters of the propeller and engine (number of blades, rotational speed). Evaluation of that modulation provides information on the ship, such as the shaft rotation frequency, th
Publikováno v:
2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO).
In this paper, underwater turbine noise emitted by China's first offshore operational wind farm in Shanghai Donghai Bridge is measured and analyzed. The underwater sound from wind turbines is mainly generated by tower vibrations. For this reason, two
Publikováno v:
2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO).
The ocean ambient noise contains abundant information of the ocean environment, so it is necessary to study its characteristics. As a function of frequency, geographical location and time, the directivity of ambient noise is an important characterist