Results 31 to 40 of about 5,216 (194)
Design and implementation of anulus-shaped ciliary structure for four-unit MEMS vector hydrophone
International Journal of Metrology and Quality Engineering, 2021 Inspired from fish bionics, an anulus-shaped ciliary structure for four-unit MEMS vector hydrophone (AFUVH) is proposed in this paper. It replaces the previous bionic cilium-shaped structure and becomes a novel sensing structure in the four-unit MEMS ...
Zhang Xiaoyong +7 more
doaj +1 more source
Internal stress wave measurements in solids subjected to lithotripter pulses [PDF]
, 1993 Semiconductor strain gauges were used to measure the internal strain along the axes of spherical and disk plaster specimens when subjected to lithotripter shock pulses. The pulses were produced by one of two lithotripters.
Burns, S. J. +4 more
core +3 more sources
IEEE Access, 2021 For scenarios of coherent underwater sources at low signal-to-noise ratio (SNR), a novel quaternion-based DOA algorithm without eigendecomposition is proposed using a linear vector-hydrophone array.
Yi Lou +3 more
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Design and research on impact resistance characteristics of vector hydrophone application platform [PDF]
MATEC Web of Conferences, 2019 On the basis of the analysis of the impact resistance of the application platform of the vector hydrophone is analysed , this paper designed single-stage and two-stage vibration isolation system based on rubber damper by using its characteristics of ...
Zhao Tianji, Chen Hongjuan
doaj +1 more source
Recent Progress in Fiber-Optic Hydrophones
Photonic Sensors, 2021 Fiber-optic hydrophone (FOH) is a significant type of acoustic sensor, which can be used in both military and civilian fields such as underwater target detection, oil and natural gas prospecting, and earthquake inspection.
Zhou Meng +5 more
doaj +1 more source
Research on Self-Noise Suppression of Marine Acoustic Sensor Arrays
Remote Sensing, 2022 Marine acoustic sensors can detect underwater acoustic information. The cilium micro-electro-mechanical system (MEMS) vector hydrophone (CVH) is the core component of the ocean noise measurement system.
Haoyu Tan +9 more
doaj +1 more source
Estimating the multipath structure of an underwater channel using a single vector sensor [PDF]
, 2011 This paper aims at estimating the multipath structure of an underwater acoustic channel using a single vector sensor. The multipath structure of an underwater acoustic channel measured by a single hydrophone from broadband signals is used for source ...
Felisberto, P. +2 more
core +2 more sources
Journal of Marine Science and Engineering, 2021 Direction-of-arrival (DOA) estimation in a spatially isotropic white noise background has been widely researched for decades. However, in practice, such as underwater acoustic ambient noise in shallow water, the ambient noise can be spatially colored ...
Guolong Liang +4 more
doaj +1 more source
Smart Embedded Passive Acoustic Devices for Real-Time Hydroacoustic Surveys [PDF]
, 2018 This paper describes cost-efficient, innovative and interoperable ocean passive acoustics sensors systems, developed within the European FP7 project NeXOS (Next generation Low-Cost Multifunctional Web Enabled Ocean Sensor Systems Empowering Marine ...
Artero Delgado, Carola +11 more
core +2 more sources
Optimal tone detection for optical fibre vector hydrophone [PDF]
IET Radar, Sonar & Navigation, 2018 An optimal tone detector based on the Neyman–Pearson criterion is proposed for the optical fibre vector hydrophone (OFVH). The detector takes account of the difference between noise levels on the acoustic pressure channel and the three particle acceleration channels of an OFVH.
Chengyan Peng +3 more
openaire +1 more source