title: Eddy-current non-inertial displacement sensing for underwater infrasound measurements.
abstract: A non-inertial sensing approach for an Acoustic Vector Sensor (AVS), which utilizes eddy-current displacement sensors and operates well at Ultra-Low Frequencies (ULF), is described here. In the past, most ULF measurements (from mHertz to approximately 10 Hertz) have been conducted using heavy geophones or seismometers that must be installed on the seafloor; these sensors are not suitable for water column measurements. Currently, there are no readily available compact and affordable underwater AVS that operate within this frequency region. Test results have confirmed the validity of the proposed eddy-current AVS design and have demonstrated high acoustic sensitivity.
authors.affiliation: Stevens Institute of Technology, 711 Hudson Street, Hoboken, New Jersey 07030, USA. ddonskoy@stevens.edu
authors.forename: Dimitri M
authors.initials: DM
authors.lastname: Donskoy
authors.forename: Benjamin A
authors.initials: BA
authors.lastname: Cray
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D004867:Equipment Design; D008962:Models, Theoretical; D009038:Motion; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D014159:Transducers; D014867:Water
chemical_list: D014867:Water