The major obstacle to underwater acoustic communication is the interference of multi-path signals due to surface and bottom reflections. High speed acoustic transmission over a shallow water channel characterized by small grazing angles presents formidable difficulties. The reflection losses associated with such small angles are low, causing large amplitudes in multi-path signals. In this paper we propose a simple but effective model for multi-path interference, which is then used to assess the performance of a digital communication system operating in a shallow water channel. The results indicate that transmission rates in excess of 8 kbits/s are possible over a distance of 13 km and channel depth of only 20 meters. Such a system offers improved performance in applications such as data collection from underwater sensors.
Performance analysis of digital acoustic communication in a shallow water channel
Analyse der Betriebseigenschaft digitaler akustischer Kommunikation in einem Flachwasserkanal
IEEE Journal of Oceanic Engineering ; 20 , 4 ; 293-299
1995
7 Seiten, 17 Quellen
Article (Journal)
English
Betriebseigenschaft , Leistungsanalyse , Systemanalyse , digitale Signalverarbeitung , akustische Übertragung , Nachrichtenübertragungstechnik , Digitalübertragung , Unterwasserschall , Reflexionsfaktor , Reflexion , Einfallswinkel , reflektierte Welle , Mehrwegübertragung , akustische Signalverarbeitung , Mehrwegkanal
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