Results 21 to 30 of about 2,896,576 (244)

A Low-Complexity Underwater Acoustic Coherent Communication System for Small AUV

Remote Sensing, 2022
While underwater acoustic (UWA) communication offers a practical way to establish a wireless link with underwater vehicles, designing a UWA communication system onboard a small autonomous underwater vehicle (AUV) still poses significant challenges.
Weihua Jiang, Xiaoyu Yang, Feng Tong, Yijun Yang, Tianhua Zhou   +4 more
doaj   +1 more source

On Mixed-Initative Planning and Control for Autonomous Underwater Vehicles [PDF]

Supervision and control of Autonomous underwater vehicles (AUVs) has traditionally been focused on an operator determining a priori the sequence of waypoints of a single vehicle for a mission.
Chrpa, Lukáš, Py, Frederic, Ribeiro, Manuel, Pinto, Jose, Sousa, Joao, Rajan, Kanna   +5 more
core   +3 more sources

Underwater Target Detection Based on Sonar Image

水下无人系统学报, 2023
Underwater target detection by processing sonar images is of great military and civil significance. This paper comprehensively describes the principles, methods, algorithms, and development trends in underwater target detection based on sonar images ...
Zixiao HAO, Qi WANG
doaj   +1 more source

Underwater Turbulence Detection Using Gated Wavefront Sensing Technique

Sensors, 2018
Laser sensing has been applied in various underwater applications, ranging from underwater detection to laser underwater communications. However, there are several great challenges when profiling underwater turbulence effects.
Ying Bi, Xiping Xu, Sing Yee Chua, Eddy Mun Tik Chow, Xin Wang   +4 more
doaj   +1 more source

Underwater Object Detection Algorithm Based on Adding Channel and Spatial Fusion Attention Mechanism

Journal of Marine Science and Engineering, 2023
Underwater target detection is the foundation and guarantee for the autonomous operation of underwater vehicles and is one of the key technologies in marine exploration. Due to the complex and special underwater environment, the detection effect is poor,
Xingyao Wang, Gang Xue, Shuting Huang, Yanjun Liu   +3 more
doaj   +1 more source

Mapping Panlongcheng: New Work on the Type-Site of the Early Shang Period (1500–1300 BC) in Hubei Province, China

Land, 2021
Recent work at the early Shang period type site in Panlongcheng, Hubei Province, China, provides a new understanding of changes in the landscape and water environment over time.
Xin Su, Qiushi Zou, Shuchun Yao, Chunhai Li, Sanyuan Zhu, Changping Zhang   +5 more
doaj   +1 more source

A Robust Sequential Acoustic Sensing Framework for Shallow-Water Meteorological Monitoring in IoUT

IoT
Passive acoustic monitoring of ocean surface wind speed and rainfall faces severe degradation in shallow waters due to multipath propagation and non-meteorological noise interference.
Xuefeng Liu, Rui Tang, Qindong Sun, Sichen Zou   +3 more
doaj   +1 more source

Underwater target detection algorithm based on improved YOLOv4 with SemiDSConv and FIoU loss function

Frontiers in Marine Science, 2023
Underwater target detection is an indispensable part of marine environmental engineering and a fast and accurate method of detecting underwater targets is essential.
Chengpengfei Zhang, Guoyin Zhang, Heng Li, Hui Liu, Jie Tan, Xiaojun Xue   +5 more
doaj   +1 more source

Underwater Image Enhancement Using An Integrated Colour Model. [PDF]

, 2007
In underwater situations, clarity of images are degraded by light absorption and scattering. This causes one colour to dominate the image.
Talib, Abdullah Zawawi, Iqbal, Kashif, Osman, Mohd. Azam, Salam, Rosalina Abdul   +3 more
core   +1 more source

Innovation below the surface: development of a canine underwater search training device for submerged scent detection

Frontiers in Veterinary Science
The effective detection of targets in aquatic environments, particularly underwater, poses a significant challenge for environmental and conservation monitoring and response.
Paul Bunker, Christina Brewster
doaj   +1 more source