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Ocean remote sensing using passive acoustics
The Journal of the Acoustical Society of America, 2019Conventional acoustic remote sensing techniques typically rely on controlled active sources which can be problematic to deploy and operate over the long term, especially if multiple sources are required to fully illuminate the ocean region of interest.
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Stability classification by acoustic remote sensing
Atmospheric Research, 1986Two different Doppler acoustic sounders have been operated at the Kernforschungszentrum Karlsruhe (KfK) since 1982. It has been investigated whether meteorological data from these sounders can be used for dispersion modeling and monitoring in the environment of pollutant-emitting plants. Data from the sounders and from a 200 m high meteorological tower
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Remote Acoustic Sensing of Manganese Nodule Deposits
Offshore Technology Conference, 1982Abstract Results of an investigation of the acoustic response from manganese nodule deposits are presented. The purpose of the Sea Grant sponsored work was to develop mathematical models of nodule acoustic scattering for use in processing ocean sounding data.
Allen H. Magnuson +4 more
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Acoustic remote sensing of the boundary layer
Proceedings of the Indian Academy of Sciences Section C: Engineering Sciences, 1982An acoustic echo sounder (called sodar) has been developed, designed and fabricated. This equipment has been operating successfully for several years and has been shown to have important applications in the areas of air pollution control/studies, microwave and millimetre wave radio communication including troposcatter, aviation and micrometeorology ...
S. P. Singal, B. S. Gera
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Acoustic remote sensing of ocean flows
1997Acoustic techniques have become powerful tools for measurement of ocean circulation mainly because of the ability of acoustic signals to travel long distances in water, and the inherently non-invasive nature of measurement. The satellite remote sensint techniques employing active and passive optical thermal and microwave signals, and coastally operated
Joseph, A., Desa, E.
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Undersea remote sensing with acoustic communications waveforms
OCEANS 2015 - Genova, 2015Coherence under varied circumstances is compared for two classes of waveform: linear FM chirps (a conventional sonar waveform) and binary phase shift keyed messages (a conventional acoustic communications waveform). All but the waveforms' time domain structure is kept constant during the comparison.
Melissa G. Meyer, Nicholas A. Rotker
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Acoustic remote sensing of the upper ocean
The Journal of the Acoustical Society of America, 1988There are particles suspended in the ocean, such as bubbles and biological debris, which can backscatter acoustic waves. It is postulated that the backscatter from a collection of particles produces a unique acoustic signature. Since these particles are passive riders, it would be feasible to track the movement of the water by using a sonar and a cross-
J. Shorey, N. P. Chotiros
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Acoustic Remote Sensing Piezoceramic Transducers with Internal Screen
2020 IEEE 40th International Conference on Electronics and Nanotechnology (ELNANO), 2020The analytical relationships, allowing to quantify the parameters of the cylindrical piezoceramic transducers with internal screens for remote sensing acoustic fields by means of the related fields method in multiply assessments of the resonance radiation spectra and the angular distribution features of acoustic fields at the resonant frequencies ...
Oleksandr Leiko +3 more
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Remote Acoustic Monitoring System for Noise Sensing
2017The concept of smart cities comprises a wide range of control and actuators systems aimed to improve the habitability and perception that citizens have of cities. A smart city covers many of these systems, ranging from applications that facilitate the governance of cities and encourage citizens’ participation to services focused on improving their ...
Unai Hernandez-Jayo +3 more
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Acoustic Passive Remote Temperature Sensing
1982Passive non-invasive temperature measurement of the interior of a body may be accomplished by using the acoustic thermal noise spectra of the body. The noise power spectrum received by an acoustic transducer coupled with the surface of the body is measured and mathematically deconvoluted to provide the temperature-depth distribution in an interior ...
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