Fabrication and Underwater Testing of a Vector Hydrophone Comprising a Triaxial Piezoelectric Accelerometer and Spherical Hydrophone [PDF]
Sensors, 2022 A vector hydrophone is an underwater acoustic sensor that can detect the direction of a sound source. Wide-band characteristics and high sensitivity enhance the performance of underwater surveillance systems in complex environments.
Taehoun Roh +6 more
doaj +7 more sources
Research of DOA Estimation Based on Single MEMS Vector Hydrophone [PDF]
Sensors, 2009 The MEMS vector hydrophone is a novel acoustic sensor with a “four-beamcilia” structure. Based on the MEMS vector hydrophone with this structure, the paper studies the method of estimated direction of arrival (DOA).
Wen Dong Zhang +5 more
doaj +7 more sources
A MEMS-Based Co-Oscillating Electrochemical Vector Hydrophone [PDF]
Micromachines, 2022 Aiming at the development needs of low-frequency and high-sensitivity vector hydrophones, this paper has developed a micro-electro-mechanical system (MEMS) based co-oscillating electrochemical vector hydrophone.
Anxiang Zhong +5 more
doaj +5 more sources
The Development of the Differential MEMS Vector Hydrophone [PDF]
Sensors, 2017 To solve the problem that MEMS vector hydrophones are greatly interfered with by the vibration of the platform and flow noise in applications, this paper describes a differential MEMS vector hydrophone that could simultaneously receive acoustic signals ...
Guojun Zhang +4 more
doaj +5 more sources
Vector Hydrophone Array Design Based on Off-Grid Compressed Sensing [PDF]
Sensors, 2020 Array design is the primary consideration for array signal processing, and sparse array design is an important and challenging task. In underwater acoustic environments, the vector hydrophone array contains more information than the scalar hydrophone ...
Zhibo Shi +4 more
doaj +5 more sources
Research on Direction of Arrival Estimation Based on Self-Contained MEMS Vector Hydrophone [PDF]
Micromachines, 2022 A self-contained MEMS vector hydrophone with a scalar–vector integrated design is proposed in this paper. Compared with traditional MEMS vector hydrophones, this design solves the problem of ambiguity in the port and starboard during orientation, and ...
Shan Zhu +8 more
doaj +4 more sources
Array MEMS Vector Hydrophone Oriented at Different Direction Angles [PDF]
Sensors, 2019 A new type of array MEMS (Microelectro Mechanical Systems) vector hydrophone has been proposed to solve the left-right ambiguity problem that is commonly found in current ones.
Mengran Liu +6 more
doaj +5 more sources
Directivity Modeling and Simulation Analysis of a Novel Structure MEMS Piezoelectric Vector Hydrophone [PDF]
Micromachines, 2023 In this paper, a novel dual-mass MEMS piezoelectric vector hydrophone is proposed to eliminate the transverse effect and solve the problem of directivity offset in traditional single-mass MEMS piezoelectric vector hydrophones.
Wei Deng +3 more
doaj +2 more sources
DOA Estimation Method for Vector Hydrophones Based on Sparse Bayesian Learning [PDF]
SensorsThrough extensive literature review, it has been found that sparse Bayesian learning (SBL) is mainly applied to traditional scalar hydrophones and is rarely applied to vector hydrophones.
Hongyan Wang +6 more
doaj +4 more sources
Dimension Reduction Localization Algorithm of Mixed Sources Based on MEMS Vector Hydrophone Array [PDF]
Micromachines, 2022 In this paper, a mixed sources dimension reduction Multiple Signal Classification (MUSIC) localization algorithm suitable for Micro-Electro-Mechanical System (MEMS) vector hydrophone linear arrays is proposed, which reduces the two-dimensional search to ...
Zhenzhen Shang +5 more
doaj +2 more sources