Results 1 to 10 of about 54,243 (312)

SONAR IMAGE RECOGNITION BASED ON MACHINE LEARNING FRAMEWORK [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
In order to improve the robustness and generalization ability of model recognition, sonar images are enhanced by preprocessing such as conversion coordinates, interpolation, denoising and enhancement, and the transfer learning method under the Caffe ...
M. Dong, H. Qiu, H. Wang, P. Zhi, Z. Xu
doaj   +1 more source

An Advanced Frequency Estimation Algorithm Based on Analytic Compensation of Effects of Dominant Harmonic in Power Systems

open access: yesIEEE Access, 2021
This paper proposes an advanced frequency estimation algorithm, where the interference effect of harmonic is effectively compensated by proposing and using a new ‘harmonics interference decomposition model’.
Kyou Jung Son   +3 more
doaj   +1 more source

Design of an underwater acoustic array for full ocean depth multi-beam echo sounder [PDF]

open access: yesMATEC Web of Conferences, 2019
In order to meet the technical requirements of full ocean depth multibeam echo sounder, the underwater acoustic array must have the ability of wide coverage, broadband response, high sensitivity and high reliability.
Hao Haoqi, Xia Tiejian, Xie Min
doaj   +1 more source

Sonar Image Target Detection Based on Style Transfer Learning and Random Shape of Noise under Zero Shot Target

open access: yesRemote Sensing, 2022
With the development of sonar technology, sonar images have been widely used to detect targets. However, there are many challenges for sonar images in terms of object detection.
Jier Xi, Xiufen Ye, Chuanlong Li
doaj   +1 more source

DP-ViT: A Dual-Path Vision Transformer for Real-Time Sonar Target Detection

open access: yesRemote Sensing, 2022
Sonar image is the main way for underwater vehicles to obtain environmental information. The task of target detection in sonar images can distinguish multi-class targets in real time and accurately locate them, providing perception information for the ...
Yushan Sun   +5 more
doaj   +1 more source

DSM Sonar Software [PDF]

open access: yes, 2020
Post-processing of sonar data is a common task in ocean science. This includes the creation of bathymetric maps, the use of seafloor backscatter information to determine sediment types as well as the analysis of water column data, e.g. for the assessment
Weiß, Tim, Greinert, Jens
core   +1 more source

SONAR

open access: yesouvirOUver, 2020
As composições sonoro-visuais de O Grivo possibilitam múltiplas experiências numa relação entre música, instalação e performance. As esculturas sonoras inventadas pelos artistas, a partir de fragmentos, impressionam não só pelas formas, mas também pela presença que assumem no espaço, criando uma territorialidade expansiva que transita entre a gambiarra
Gabriela Clemente de Oliveira   +1 more
openaire   +3 more sources

SDNet: Image‐based sonar detection network for multi‐scale objects

open access: yesIET Image Processing, 2023
Autonomous Underwater Vehicle (AUV) carrying sonar for object detection has become one of the main ways of ocean exploration. However, object detection in sonar images always faces the problems of balancing detection accuracy and efficiency. To this end,
Pengfei Shi   +4 more
doaj   +1 more source

PROSPECTS FOR THE USE OF COMPOSITE RESISTORS IN THE HARDWARE OF INFORMATION AND MEASUREMENT SYSTEMS

open access: yesНадежность и качество сложных систем, 2022
Background. Non-wire resistors are one of the most popular types of radio components. Their number in modern radio equipment reaches more than one third (40 %) of the total number of all resistors.
A.Yu. Dorosinskiy   +2 more
doaj   +1 more source

Beaked whales respond to simulated and actual navy sonar [PDF]

open access: yes, 2011
This article is distributed under the terms of the Creative Commons Public Domain declaration. The definitive version was published in PLoS One 6 (2011): e17009, doi:10.1371/journal.pone.0017009.Beaked whales have mass stranded during some naval sonar ...
Christopher W. Clark   +50 more
core   +1 more source

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