Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Tae Ho Im"'
Publikováno v:
IEEE Access, Vol 7, Pp 106019-106033 (2019)
The concept of frequency reuse has been considered for underwater acoustic cellular (UAC) systems owing to the limited available bandwidth of acoustic channels. In a UAC system, the underwater equipment (UE) should detect the identity of the underwat
Externí odkaz:
https://doaj.org/article/b736d73b4d2040ac90e2d8a57aee1526
Publikováno v:
Sensors, Vol 20, Iss 15, p 4147 (2020)
In an underwater acoustic cellular (UAC) system, underwater equipment or sensor nodes need to detect the identity of an underwater base station (UBS) and synchronise it with a serving UBS. It is known that, in an underwater acoustic channel, the temp
Externí odkaz:
https://doaj.org/article/d969bc0be2d44a57853fde1fd23487c2
Publikováno v:
Sensors, Vol 18, Iss 6, p 1969 (2018)
This paper proposes a cooperative medium access control (MAC) protocol for underwater wireless sensor networks (UWSNs) named UCMAC, which fundamentally benefits from cooperative communication. In UCMAC, a source identifies cooperators and provides it
Externí odkaz:
https://doaj.org/article/f6a0a7a29b8144c48f5c66e781285f39
Publikováno v:
Fishes, Vol 9, Iss 9, p 349 (2024)
The rapid depletion of fishery resources has led to the global implementation of Total Allowable Catch (TAC) systems. However, the current manual survey methods employed by land-based inspectors show limitations in accuracy and efficiency. This study
Externí odkaz:
https://doaj.org/article/65c976ab268b4b03bdb98e00f1ec2507
Publikováno v:
Applied Sciences, Vol 14, Iss 17, p 8033 (2024)
Sea fog reduces visibility to less than 1 km and is a major cause of maritime accidents, particularly affecting the navigation of small fishing vessels as it forms when warm, moist air moves over cold water, making it difficult to predict. Traditiona
Externí odkaz:
https://doaj.org/article/36dbf1bff19b444ba3057a3f4779a242
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 1, p 53 (2023)
A number of accidents at sea are primarily caused by low visibility due to sea fog. Therefore, it is important to estimate sea fog intensity and visibility in real-time in the ocean environment. Visibility meters utilize optical sensors rather than v
Externí odkaz:
https://doaj.org/article/b361010913144a59bf4846e11bdfa678
Publikováno v:
Journal of the Korea Institute of Information and Communication Engineering. 27:525-533
Publikováno v:
The Journal of Korean Institute of Communications and Information Sciences. 47:1162-1169
Publikováno v:
The Journal of Korean Institute of Communications and Information Sciences. 47:986-995
Publikováno v:
Electronics; Volume 12; Issue 9; Pages: 2002
Several cameras are mounted on navigation aid buoys and these cameras can be used for accident prevention systems by processing the images captured. The currently existing image processing algorithms were originally designed for accident prevention o