Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Shengchun, Piao"'
Publikováno v:
Remote Sensing, Vol 16, Iss 12, p 2100 (2024)
For two-dimensional forward-looking sonar imaging, high sidelobes significantly degrade the quality of sonar images. The cosine window function weighting method is often applied to suppress the sidelobe levels in the angular and range dimensions, at
Externí odkaz:
https://doaj.org/article/4d85f84c76b34aa485287cb95661bc45
Publikováno v:
IET Radar, Sonar & Navigation, Vol 15, Iss 5, Pp 471-484 (2021)
Abstract Multiple‐input and multiple‐output (MIMO) imaging sonar can achieve high spatial resolution with a minimum number of elements and improve imaging performance. However, the superposed echoes for the multiple transmitted orthogonal wavefor
Externí odkaz:
https://doaj.org/article/fc2b49bbe8fb4afb9384f3234b27a4c5
Publikováno v:
Remote Sensing, Vol 14, Iss 24, p 6314 (2022)
Based on the Wentze–Kramers–Brillouin approximation, we derive formulae to calculate the position of convergence zones in a range-dependent environment with sound speed profiles varying in linear and ellipsoidal Gaussian eddy cases. Simulation re
Externí odkaz:
https://doaj.org/article/70d6e2a842a94f388b034a615964ba53
Publikováno v:
IEEE Journal of Oceanic Engineering. :1-17
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5e80408fa5d28c8d7f12592c204d54b
https://doi.org/10.1109/joe.2023.3265165
https://doi.org/10.1109/joe.2023.3265165
Publikováno v:
Journal of Marine Science and Engineering, Vol 9, Iss 9, p 1035 (2021)
Oceanic fronts involved by ocean currents led to strong gradients of temperature, density and salinity, which have significant effects on underwater sound propagation. This paper focuses on the impact of the oceanic front on three-dimensional underwa
Externí odkaz:
https://doaj.org/article/a524d6b61d0840e699e8b2021c5576b4
Autor:
Yang Dong, Shengchun Piao, Lijia Gong, Guangxue Zheng, Kashif Iqbal, Shizhao Zhang, Xiaohan Wang
Publikováno v:
Journal of Marine Science and Engineering, Vol 9, Iss 8, p 840 (2021)
Recent studies have illustrated that the Multichannel Analysis of Surface Waves (MASW) method is an effective geoacoustic parameter inversion tool. This particular tool employs the dispersion property of broadband Scholte-type surface wave signals, w
Externí odkaz:
https://doaj.org/article/7a117a6e4bfd419bab92d4c62962ed71
Publikováno v:
Journal of Marine Science and Engineering, Vol 9, Iss 8, p 787 (2021)
A mesoscale eddy is detected and tracked in the western North Pacific region. Within the life cycle of the cyclonic eddies, the intensities of eddies make a difference. Satellite images indicate the oceanic eddy keeps westward-moving until it disappe
Externí odkaz:
https://doaj.org/article/52ee70bb3a8540bb8422b42ab03d8d97
Publikováno v:
Journal of Marine Science and Engineering, Vol 9, Iss 8, p 799 (2021)
Mesoscale ocean vortices are common phenomenon and fairly distributed over the global oceans. In this study, mesoscale vortex in the South China Sea is identified by processing of AIPOcean data. The characteristic parameters of the identified vortex
Externí odkaz:
https://doaj.org/article/eeb0beb591d14e71afb822d22f01aad2
Publikováno v:
The Journal of Engineering (2019)
Multiple-input multiple-output (MIMO) sonar enables high-resolution imaging, which is extremely useful in underwater acoustic high-precision imagery. However, the first peak sidelobe levels and beamwidth performance degrade significantly when convent
Externí odkaz:
https://doaj.org/article/94936f81a72d4ae0939d5a3771da7def
Autor:
Sartaj Khan, Shengchun Piao, Guangxue Zheng, Imran Ullah Khan, David Bradley, Shazia Khan, Yang Song
Publikováno v:
Atmosphere, Vol 12, Iss 5, p 587 (2021)
2016 and 2017 were marked by strong El Niño and weak La Niña events, respectively, in the tropical East Pacific Ocean. The strong El Niño and weak La Niña events in the Pacific significantly impacted the sea surface temperature (SST) in the tropi
Externí odkaz:
https://doaj.org/article/8f559b4f5db34ee0945d1796bf86ad4b