Acoustic Communications: Through soils, sands, water, and tissue
| Autor: | Michael L. Oelze, Sijung Yang, Andrew C. Singer |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Reverberation
Acoustics and Ultrasonics Computer science Acoustics Attenuation Bandwidth (signal processing) 020206 networking & telecommunications 02 engineering and technology symbols.namesake Transducer Arts and Humanities (miscellaneous) 0202 electrical engineering electronic engineering information engineering symbols 020201 artificial intelligence & image processing Ultrasonic sensor Doppler effect Subsea |
| Zdroj: | The Journal of the Acoustical Society of America. 141:3986-3987 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.4989117 |
| Popis: | This talk will cover several experimental results and the challenges that arise in applying the basic concept of acoustic communications to vastly different media. Specifically, results obtained from state-of-the-art ultrasonic communications over distances of 100 m at data rates in excess of 1Mbps will be described, along with the unique challenges that such high data rates impose of any subsea applications, for which traditional Doppler compensation techniques are wholly inadequate. A sample-by-sample time-scale projection method was developed for streaming video applications for subsea operations. Over much shorter distance scales, even more acoustic bandwidth is available, and data races in excess of 300 MB/s have been achieved. Difficulties in such applications arise due to the nonlinearities excited in both the medium and potentially the transducers owing to the extremely wide bandwidths of operation. For potential biomedical applications, acoustic communication methods have been successfully used to transmit data in excess of 30 Mb/s through animal tissue. Challenges in such applications include no only nonlinearity and Doppler compensation, but also reverberation and scattering off bone and other materials. A final application that will be discussed is the use of acoustic communications methods for through-soils and through-sands experiments with application to various geotechnical projects. Attenuation, coupling, and excitation pose substantive challenges for such applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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