Communications – electrical: acoustic wave systems and devices – Underwater system – Telemetering
Patent
1993-10-01
1995-05-02
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Underwater system
Telemetering
340850, H04B 1100
Patent
active
054126207
ABSTRACT:
A hydroacoustic communication system employs spread spectrum to mitigate multipath interference caused by acoustic reflections off underwater surfaces and other large boundaries or acoustic discontinuities. The system is particularly beneficial for mitigating errors due to surface reflections, and for mitigating interference due to unwanted signals having a delay ranging from tens of microseconds to hundreds of milliseconds.
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S. A. Reible, "Underwater Data Communications Using Hydroacoustic Spread Spectrum", IEEE UFFC Chapter Meeting Lexington, Mass. 22 Apr. 1992.
J. H. Fischer, K. R. Bennett, S. A. Reible, J. H. Cafarella, I. Yoa, "High Data Rate, Underwater Acoustic Data-Communications Transceiver," Proc. of Mastering the Oceans Through Technology, (Oceans 92), Newport, R.I. pp. 571-576 Oct. 26-29, 1992.
R. A. Iltis and A. W. Fuxjaeger, "A Digital DS Spread Spectrum Receiver with Joint Channel and Doppler Shift Estimation," IEEE Trans. Comm. v. 39, No. 8, Aug. 1991 pp. 1255-1267.
Compendex Plus Data Base Search 1970-1992/Jan.
Bennett Kendrick R.
Cafarella John H.
Fischer Jeffrey H.
Reible Stanley A.
Micrilor, Inc.
Pihulic Daniel T.
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