Results 21 to 30 of about 54,243 (312)

Empowering and conquering infirmity of visually impaired using AI‐technology equipped with object detection and real‐time voice feedback system in healthcare application

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract The Internet of Things is emerging as a crucial technology in aiding humans and making their lives easier. Among the human population, a large percentage of people suffer from disabilities resulting in challenges in everyday life particularly people with visual disabilities.
Hania Tarik   +8 more
wiley   +1 more source

A blind contour‐aware quality model for sonar images

open access: yesIET Image Processing, 2022
Since the penetration depth of visible light is limited in muddy and dark deep marine environment, sonar imaging, which is independent of natural light, has been attracting much attention in underwater detections.
Weiling Chen   +3 more
doaj   +1 more source

Parameter state estimation for bistatic sonar systems

open access: yes, 2022
S.821-832The use of autonomous underwater vehicles (AUVs) cooperating in a network for anti-submarine warfare surveillance operations is of topical interest. Each AUV has to localise and track targets (submarines) robustly and precisely.
Broetje, Lars   +2 more
core   +1 more source

Vertical dimension acoustic field interference pattern prediction and source depth estimation in deep ocean [PDF]

open access: yesJASA Express Letters
In this Letter, a simplified expression of the vertical dimension narrowband interference pattern in deep water direct arrival zone is theoretically derived. The correlation between the vertical dimension interference pattern and source depth is analyzed,
Guangying Zheng   +6 more
doaj   +1 more source

APPLICATION OF PHYSICAL AND TECHNICAL METHODS FOR IDENTIFYING WIRE RESISTORS’ FAILURES CAUSES

open access: yesИзвестия высших учебных заведений. Поволжский регион:Технические науки, 2020
Background. The object of the study is the failure of wire resistors caused by various types of defects in parts, components, and materials used in the production of resistive sensors.
A. Ju. Dorosinskij
doaj   +1 more source

Acoustic and foraging behavior of a Baird’s beaked whale, Berardius bairdii, exposed to simulated sonar [PDF]

open access: yes, 2014
Research was supported by the US Navy Chief of Naval Operations, Environmental Readiness Program, the Office of Naval Research, the Naval Postgraduate School, and the National Research Council.Beaked whales are hypothesized to be particularly sensitive ...
A. K. Stimpert   +26 more
core   +1 more source

Dolphin-inspired target detection for sonar and radar

open access: yes, 2014
Gas bubbles in the ocean are produced by breaking waves, rainfall, methane seeps, exsolution, and a range of biological processes including decomposition, photosynthesis, respiration and digestion.
Leighton, T.G.   +3 more
core   +1 more source

Size constancy in bat biosonar? [PDF]

open access: yes, 2013
Perception and encoding of object size is an important feature of sensory systems. In the visual system object size is encoded by the visual angle (visual aperture) on the retina, but the aperture depends on the distance of the object. As object distance
Heinrich, Melina   +7 more
core   +1 more source

Adaptive Hoyer-L-Moment Envelope Spectrum: A Method for Robust Demodulation of Ship-Radiated Noise in Low-SNR Environments

open access: yesSensors
Propeller noise is the main source of ship-radiated noise. Extracting and analyzing the modulation characteristics from the propeller noise plays a crucial role in classifying and identifying vessel targets.
Ruizhe Zhang, Qingcui Wang, Shuanping Du
doaj   +1 more source

Dose-response relationships for the onset of avoidance of sonar by free-ranging killer whales

open access: yes, 2014
The authors acknowledge the support of the MASTS pooling initiative (The Marine Alliance for Science and Technology for Scotland) in the completion of this study.
Samarra, Filipa Isabel Pereira   +21 more
core   +1 more source

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