Results 41 to 50 of about 88,236 (205)

Bottom Detection from Backscatter Data of Conventional Side Scan Sonars through 1D-UNet

Remote Sensing, 2021
As widely applicated in many underwater research fields, conventional side-scan sonars require the sonar height to be at the seabed for geocoding seabed images.
Jun Yan, Junxia Meng, Jianhu Zhao
doaj   +1 more source

HULU SUNGAI PERAK BED SEDIMENT MAPPING USING UNDERWATER ACOUSTIC SONAR [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Development in acoustic survey techniques in particular side scan sonar have revolutionized the way we are able to image, map and understand the riverbed environment.
N. Arriafdi, O. Zainon, U. Din, A. W. Rasid, Z. Mat Amin, R. Othman, A. S. Mardi, R. Mahmud, N. Sulaiman   +8 more
doaj   +1 more source

Marine geophysical surveys and interpretations on the ancient Eunostos harbor Area, Mediterranean Coast, Egypt

Egyptian Journal of Petroleum, 2023
A marine geophysical survey was carried out over the ruins of the ancient Eunostos harbor, in front of the recent western harbor of Alexandria. The survey works aimed to study the seafloor and the subsurface layers over the survey area using side-scan ...
Amr Z. Hamouda, Nader H. El-Gendy, Suzan El-Gharabawy, Mahmoud Salah, Moataz Kh. Barakat   +4 more
doaj   +1 more source

STUDI APLIKASI MULTIBEAM ECHOSOUNDER DAN SIDE SCAN SONAR UNTUK MENDETEKSI FREE SPAN PADA SALURAN PIPA BAWAH LAUT

Geoid, 2015
Saluran pipa bawah laut sebagai salah satu sistem distribusi dalam industri minyak dan gas harus selalu diperhatikan kondisinya agar terhindar dari risiko kerugian material maupun dampak terhadap lingkungan.
I Made Dwifa Satya Nugraha, Yuwono Yuwono   +1 more
doaj   +1 more source

Using Side-Scan Sonar instrument to Characterize and map of seabed identification target in punggur sea of the Riau Islands, Indonesia.

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2017
Punggur sea has many habitats, object, and structured of seabed with hight tide and wave. Side scan sonar is an underwater acoustic instrument for identification of seabed.
Muhammad Zainuddin Lubis, Wenang Anurogo, Hanah Khoirunnisa, Sudra Irawan, Oktavianto Gustin, Arif Roziqin   +5 more
doaj   +1 more source

Side-Scan Sonar Small Objects Detection Based on Improved YOLOv11

Journal of Marine Science and Engineering
Underwater object detection using side-scan sonar (SSS) remains a significant challenge in marine exploration, especially for small objects. Conventional methods for small object detection face various obstacles, such as difficulties in feature ...
Changjun Zou, Siquan Yu, Yankai Yu, Haitao Gu, Xinlin Xu   +4 more
semanticscholar   +1 more source

A Comparative Study of Different CNN Models and Transfer Learning Effect for Underwater Object Classification in Side-Scan Sonar Images

Remote Sensing, 2023
With the development of deep learning techniques, convolutional neural networks (CNN) are increasingly being used in image recognition for marine surveys and underwater object classification.
Xing Du, Yongfu Sun, Yupeng Song, Huifeng Sun, Lei Yang   +4 more
semanticscholar   +1 more source

A Texture Feature Removal Network for Sonar Image Classification and Detection

Remote Sensing, 2023
Deep neural network (DNN) was applied in sonar image target recognition tasks, but it is very difficult to obtain enough sonar images that contain a target; as a result, the direct use of a small amount of data to train a DNN will cause overfitting and ...
Chuanlong Li, Xiufen Ye, Jier Xi, Yunpeng Jia   +3 more
doaj   +1 more source

SS-YOLO: A Lightweight Deep Learning Model Focused on Side-Scan Sonar Target Detection

Journal of Marine Science and Engineering
As seabed exploration activities increase, side-scan sonar (SSS) is being used more widely. However, distortion and noise during the acoustic pulse’s travel through water can blur target details and cause feature loss in images, making target recognition
Na Yang, Guoyu Li, Shengli Wang, Zhengrong Wei, Huaiyu Ren, Xiaobo Zhang, Yanliang Pei   +6 more
semanticscholar   +1 more source

Using Remote Sensing Techniques to Document and Identify the Largest Underwater Object of the Baltic Sea: Case Study of the Only German Aircraft Carrier, Graf Zeppelin

Remote Sensing, 2020
New shipwrecks are usually found during other work at sea. In 2006, the research vessel St. Barbara discovered probably the most massive wreck that lies on the bottom of the Baltic Sea.
Artur Grządziel
doaj   +1 more source