Results 61 to 70 of about 4,113,395 (325)

Environmentally Adaptive Sonar Technology (EAST) project report for participation in the Littoral Warfare Advanced Development (LWAD) 99-3 experiment [PDF]

, 2000
Prepared for: Littoral Warfare Advanced Development (LWAD) ProgramThe objective of the Environmentally Adaptive Sonar Technology (EAST) project is to develop approaches to improve shallow water target detection for Navy active sonar systems.
Shipley, Mitchell N.
core  

Integration of Soft‐Robotics and Deep Learning to Assess the Coordinated Biosonar Emission and Reception Dynamics in Hipposiderid Bats

Advanced Robotics Research, EarlyView.
Combining a biomimetic soft‐robot with deep‐learning data analytics sheds light on a unique peripheral dynamics seen in the biosonar system of bats: Bats modulate their ultrasonic biosonar signals upon emission as well as reception with variable, yet highly coordinated motion patterns of their noseleaves and pinnae.
Shuxin Zhang, Ruihao Wang, Xiaoyan Yin, Luhui Yang, Rolf Müller   +4 more
wiley   +1 more source

Track-before-Detect Algorithm for Underwater Diver Based on Knowledge-Aided Particle Filter

Sensors, 2022
This work studies the underwater detection and tracking of diver targets under a low signal-to-reverberation ratio (SRR) in active sonar systems. In particular, a particle filter track-before-detect based on a knowledge-aided (KA-PF-TBD) algorithm is ...
Wenrong Yue, Feng Xu, Xiongwei Xiao, Juan Yang   +3 more
doaj   +1 more source

System locates randomly placed remote objects [PDF]

, 1966
System to locate objects submerged underwater uses active/passive sonar techniques in which a transmitter is attached to the object to be recovered and a receiver is used for search.
Lovelady, R. W., Mc Fall, J. C., Jr.
core   +1 more source

SURF: A Self‐Supervised Deep Learning Method for Reference‐Free Deconvolution in Spatial Transcriptomics

Advanced Science, EarlyView.
SURF is a robust reference‐free deconvolution tool that integrates high‐dimensional spatial transcriptomics gene expression analysis with self‐supervised deep learning, enabling effective modeling of non‐linear gene interactions and spot relationships.
Shuyu Liang, Zixia Zhou, Peng Huang, Junhu Fu, Jing Jiao, Yunxia Huang, Shichong Zhou, Guanlin Wang, Yuanyuan Wang, Yi Guo   +9 more
wiley   +1 more source

Calculation Method for UKF Target Motion Elements Based on Detection Information of Active and Passive Sonars

水下无人系统学报
The target motion element is important information in anti-submarine warfare, and its calculation results have a great influence on the hitting probability of the target, thus affecting combat decision-making.
Hongrui ZHANG, Jun SU, Qian LI, Bin LI, Xiaoming KOU   +4 more
doaj   +1 more source

Target depth estimation by deep neural network based on acoustic interference structure in deep water

IET Radar, Sonar & Navigation, 2022
Automatic and robust target depth estimation is an important issue of an active detection system working in the reliable acoustic path (RAP) environment.
Yue Guo, Rui Duan, Kunde Yang
doaj   +1 more source

The limits of spatial resolution achievable using a 30kHz multibeam sonar: model predictions and field results [PDF]

, 1998
A Simrad EM300 multibeam sonar was used to attempt to resolve small (-5m high) targets in 450m of water. The targets had previously been surveyed using a deeply towed 59 kHz sidescan sonar.
Gardner, James V., Hughes Clarke, John E., Mayer, Larry A., Torresan, Mike   +3 more
core   +1 more source

Search for the Wreckage of Air France Flight AF 447

, 2014
In the early morning hours of June 1, 2009, during a flight from Rio de Janeiro to Paris, Air France Flight AF 447 disappeared during stormy weather over a remote part of the Atlantic carrying 228 passengers and crew to their deaths.
Keller, Colleen M., Kratzke, Thomas M., Stone, Lawrence D., Strumpfer, Johan P.   +3 more
core   +1 more source

Next‐Generation Piezoelectric Materials in Wearable and Implantable Devices for Continuous Physiological Monitoring

Advanced Science, EarlyView.
An analysis of literature trends and a historical overview of organic and inorganic piezoelectric materials, focusing on their structural diversity, functional mechanisms, and inherent characteristics. It then explores cutting‐edge developments in material synthesis, fabrication processes, and performance optimization, highlighting their applicability ...
Bangul Khan, Umay Amara, Bilawal Khan, Wasim Ullah Khan, Rafi u Shan Ahmad, Muhammad Shehzad Khan, Mohamed Elhousseini Hilal, Bee Luan Khoo   +7 more
wiley   +1 more source