Results 101 to 110 of about 1,335,366 (185)

Underwater ship passport [PDF]

, 2004
For years in the Polish Navy extensive measurements have been made of the underwater-radiated noise by different kinds of surface ships. To identify the source of noise, the level of vibration was also measured by accelerometers inside each ship section.
Gloza, I.
core  

The Influence of Drag Reducing Polymer on Radiated Noise from Rough Surfaces

, 1972
Experimental measurements were made of radiated noise from a rough surface moving in water and from the same surface moving in a dilute water solution of a drag reducing polymer.
Killen, John
core  

Line Spectrum Detection Algorithm of Single Vector Sensor Based on Singular Value Difference

Applied Sciences
The line spectrum of ship-radiated noise can be used in passive sonar to detect ship targets; however, it is affected by ocean noise and the Doppler effect, which has a negative effect on target detection. In the paper, the multi-channel data of a single
Xue Han, Yang Wang, Yan Huo, Peng Han, Chang Zhang   +4 more
doaj   +1 more source

Segmentation Method for Ship-Radiated Noise Using the Generalized Likelihood Ratio Test on an Ordinal Pattern Distribution. [PDF]

Entropy (Basel), 2020
He L, Shen XH, Zhang MH, Wang HY.
europepmc   +1 more source

Measurement of underwater radiated noise from a ship using self-recording hydrophones

, 2015
Inhabited environment of marine animals such as whales is gradually worse by increase of ocean noise. The greatest cause of the increase of ocean noise has been reported to be ships.
김병남, 박철수, 김봉채, 최복경   +3 more
core  

Feature Extraction of Ship-Radiated Noise Based on Enhanced Variational Mode Decomposition, Normalized Correlation Coefficient and Permutation Entropy. [PDF]

Entropy (Basel), 2020
Xie D, Esmaiel H, Sun H, Qi J, Qasem ZAH.   +4 more
europepmc   +1 more source

A Novel Underwater Acoustic Target Recognition Method Based on MFCC and RACNN

Sensors
In ocean remote sensing missions, recognizing an underwater acoustic target is a crucial technology for conducting marine biological surveys, ocean explorations, and other scientific activities that take place in water.
Dali Liu, Hongyuan Yang, Weimin Hou, Baozhu Wang   +3 more
doaj   +1 more source

Measurement and assessment method for ship radiating transient noise [PDF]

Proceedings of the 2017 2nd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2017), 2017
Jun Long, SHeng-guo Shi, Wen-sHuai Liu, Tong-kui Yu   +3 more
openaire   +1 more source

A New Feature Extraction Method Based on Improved Variational Mode Decomposition, Normalized Maximal Information Coefficient and Permutation Entropy for Ship-Radiated Noise. [PDF]

Entropy (Basel), 2020
Xie D, Sun H, Qi J.
europepmc   +1 more source

A Lightweight Channel-Frequency Joint Attention Network for Underwater Ship-Radiated Noise Separation. [PDF]

Sensors (Basel)
Dong J, Yang Q, Li Y.
europepmc   +1 more source