Proceedings Article10.1109/AUV.1990.110471
High data rate acoustic telemetry for moving ROVs in a fading multipath shallow water environment
J. Catipovic,L.E. Freitag +1 more
- 05 Jun 1990
- pp 296-303
26
TL;DR: In this article, a compact telemetry system for digital data telemetry at rates up to 10 kb/s over 1 to 10 km is presented for worst-case ocean acoustic channel conditions, and operates in the presence of source/receiver motion, fading and multiple transmission paths.
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Abstract: A compact telemetry system for digital data telemetry at rates up to 10 kb/s over 1 to 10 km is presented. The system is designed for worst-case ocean acoustic channel conditions, and operates in the presence of source/receiver motion, fading, and multiple transmission paths. In addition, the system incorporates spatial diversity by utilizing multiple hydrophones and data processing subsystems. This allows much more reliable operation under realistic circumstances where noise events and transducer masking are unavoidable. The result is a system specifically geared toward use at sea with a remotely operated vehicle (ROV). Preliminary dockside test results are presented to demonstrate the effectiveness of this multichannel system. >
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Citations
Reduced‐complexity spatial and temporal processing of underwater acoustic communication signals
TL;DR: Under relatively simple conditions, two adaptive receivers, one based on diversity combining which does not rely on any spatial signal distribution, and the other based on optimal beamforming, are shown to achieve the same performance.
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Jack Kenneth Holmes
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TL;DR: This paper presents an introduction to Linear Pseudonoise Sequences, followed by a discussion of PN Code Spread Spectrum Systems, and a review of PCM Code Formatting and Spectra.
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Acoustic telemetry - An overview
TL;DR: The underwater channel and the limitations that it imposes upon acoustic telemetry systems are reviewed and some of the systems that have been built are surveyed and indicated how they use various communication system principles to overcome these limitations.
218