Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Jianhu Zhao"'
Publikováno v:
Satellite Navigation, Vol 5, Iss 1, Pp 1-23 (2024)
Abstract The conventional technique for positioning seafloor geophones in ocean bottom seismic exploration encounters several challenges, including the significant impact of outliers on positioning results, underutilization of high-precision observat
Externí odkaz:
https://doaj.org/article/b4baa401134542b7b93efb195b82c7b3
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 656-674 (2023)
Ocean–land waveform classification (OLWC) is crucial in airborne LiDAR bathymetry (ALB) data processing and can be used for ocean–land discrimination and waterline extraction. However, the accuracy of OLWC for single-wavelength ALB systems is low
Externí odkaz:
https://doaj.org/article/cb2416b58c714a75882bbbec54914ce2
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 9, p 1770 (2023)
It has been proven that the quality factor (Q) is important for marine sediment attenuation attribute representation and is helpful for sediment classification. However, the traditional spectral-ratio (SR) method is affected by the interference effec
Externí odkaz:
https://doaj.org/article/363fcbc1f7c949a98a2061121db58b03
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 9, p 1769 (2023)
In light of the prevailing approach in which data from side-scan sonar (SSS) from Autonomous Underwater Vehicles (AUVs) are primarily processed and visualized post mission, failing to meet the requirements in terms of timeliness for on-the-fly image
Externí odkaz:
https://doaj.org/article/18deb8828ff14e4f9811ff72810c9bb4
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 6, p 1103 (2023)
The limited number and under-representation of side-scan sonar samples hinders the training of high-performance underwater object detection models. To address this issue, in this paper, we propose a diffusion model-based method to augment side-scan s
Externí odkaz:
https://doaj.org/article/8fda77a4f40444448d79233027b0496c
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 4, p 690 (2023)
The limitations of underwater acoustic communications mean that the side-scan sonar data of an autonomous underwater vehicle (AUV) cannot be transmitted back and processed in real time, which means that targets cannot be detected in real time. To add
Externí odkaz:
https://doaj.org/article/54e82070c7d246e89fc713e54ed89715
Automatic Overlapping Area Determination and Segmentation for Multiple Side Scan Sonar Images Mosaic
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 2886-2900 (2021)
Seafloor image is important for marine scientific research and ocean engineering. With the wide use of side scan sonar (SSS), multiple measured SSS images need to be mosaicked to form a large-scale and high-resolution seafloor image. This article pro
Externí odkaz:
https://doaj.org/article/110169c3ec864257b06d1f5b843315d8
Publikováno v:
Earth and Space Science, Vol 8, Iss 10, Pp n/a-n/a (2021)
Abstract Sailing‐circle GPS‐acoustic method, prevalently applied for measuring ocean floor crustal deformation, allows the precise positioning of an underwater transponder in a global frame. In the method, distance estimation requires prior infor
Externí odkaz:
https://doaj.org/article/177dada011c54216bc0e0137cfe50bf5
Autor:
Jinye Ma, Jianhu Zhao
Publikováno v:
Journal of Marine Science and Engineering, Vol 10, Iss 11, p 1664 (2022)
The idea of constructing the “GNSS-like” seafloor geodetic network for underwater positioning, navigation, and timing (PNT) has been proposed by many countries. Based on this idea, this paper introduces the principle of the seafloor PNT network a
Externí odkaz:
https://doaj.org/article/0dcc2fc1c5784ef4bba218b6ea47a667
Publikováno v:
Remote Sensing, Vol 14, Iss 14, p 3296 (2022)
Bubble plumes, as main manifestations of seabed gas leakage, play an important role in the exploration of natural gas hydrate and other resources. Multibeam water column images have been widely used in detecting bubble plume targets in recent years b
Externí odkaz:
https://doaj.org/article/e80c26ebb1764ab3b8e1c93497caa983