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Jan 17, 2025 | 
mdpi.com | Quanhong Ma |Shaohua Jin |Gang Bian |Yang Cui
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Jan 17, 2025 | 
mdpi.com | Quanhong Ma |Shaohua Jin |Gang Bian |Yang Cui
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Oct 20, 2024 | 
mdpi.com | Haixing Xia |Yang Cui |Shaohua Jin |Gang Bian
1. IntroductionAcoustic and optical measurements are commonly used methods for acquiring underwater images. However, optical measurements have a limited range underwater and struggle to capture detailed information of deep-sea environments [1]. In contrast, acoustic measurements are less affected by seawater, and they can be used to obtain comprehensive seabed terrain measurements from close to distant ranges by combining high and low frequencies.
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Sep 20, 2024 | 
mdpi.com | Yang Cui |Shaohua Jin |Gang Bian |Haixing Xia
1. IntroductionWith the continuous development and utilization of marine resources, research on seafloor sediment environments has gained increasing attention. Side-scan sonar technology, as a crucial underwater detection method, plays a significant role in marine surveys, underwater archeology, and seafloor geological studies [1,2,3,4].
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Aug 5, 2024 | 
mdpi.com | Chengyang Peng |Shaohua Jin |Gang Bian |Yang Cui
1. IntroductionThe detection and identification of underwater targets, such as shipwrecks, aircraft debris, pipelines, and reefs, are essential tasks in marine science research, resource exploration, and hydrographic surveying. These activities are critically important for maritime traffic safety, the development of marine fisheries, sonar detection, and military operations.
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Jul 9, 2024 | 
mdpi.com | Shaohua Jin |Gang Bian |Yang Cui |Quanhong Ma
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Jun 24, 2024 | 
mdpi.com | Chengyang Peng |Shaohua Jin |Gang Bian |Yang Cui
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Jun 14, 2024 | 
mdpi.com | Pan Xiong |Gang Bian |Qiang Liu |Shaohua Jin
All articles published by MDPI are made immediately available worldwide under an open access license. No specialpermission is required to reuse all or part of the article published by MDPI, including figures and tables. Forarticles published under an open access Creative Common CC BY license, any part of the article may be reused withoutpermission provided that the original article is clearly cited. For more information, please refer tohttps://www.mdpi.com/openaccess.
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May 31, 2024 | 
mdpi.com | Wei Zhang |Shaohua Jin |Gang Bian |Chengyang Peng
1. IntroductionThe precision of multibeam seafloor topography measurements is contingent upon numerous factors, among which the speed of sound in seawater emerges as pivotal. Principally, it impacts the computation of seafloor measurement point coordinates by shaping sound ray trajectories, and the accuracy and dependability of measurement outcomes hinge directly upon the correctness of the sound speed profile [1,2,3,4,5].
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May 22, 2024 | 
mdpi.com | Pan Xiong |Gang Bian |Qiang Liu |Shaohua Jin
1. IntroductionSolar activity disrupts the Earth’s magnetic field, resulting in short-term global changes. Geomagnetic matching navigation, serving as a crucial supplement to inertial navigation, provides exceptional concealment and resilience against interference, positioning it as the primary option in place of GNSS navigation following satellite rejection. Nevertheless, the effectiveness of geomagnetic matching navigation hinges on the availability of high-precision geomagnetic data.
