Performance of coherent PSK receivers using adaptive combining, beamforming and equalisation in 50 km underwater acoustic channels

Author

Thompson, D. ; Neasham, J. ; Sharif, Dr B S ; Hinton, O.R. ; Adams, A.E. ; Tweedy, A.D. ; Lawlor, M.A.

Author_Institution

Dept. of Electr. & Electron. Eng., Newcastle upon Tyne Univ., UK

Volume

2

fYear

1996

fDate

23-26 Sep 1996

Firstpage

845

Abstract

During the first phase of trials, undertaken in the Mediterranean by the MAST2 project “LORACOM”, PSK modulated data was transmitted over a 50 km underwater acoustic channel. The objectives of LORACORM are to achieve reliable underwater acoustic transmission over long ranges for applications such as remote instrumentation and ocean buoy monitoring. The test data were received on both a short vertically aligned transducer array (AV1), and on a number of widely spaced hydrophones in the water column (F1). This paper describes the results of processing this data using a number of digitally implemented coherent receiver structures based on adaptive equalisation, adaptive beamforming, and adaptive multichannel combining

Keywords

acoustic receivers; acoustic signal processing; acoustic transducer arrays; adaptive equalisers; array signal processing; data communication; data communication equipment; multipath channels; phase shift keying; receivers; underwater sound; 1.7 kHz; 50 km; 50 km underwater acoustic channels; LORACOM; MAST2 project; Mediterranean; adaptive combining; beamforming; coherent PSK receivers; digitally implemented coherent receiver structures; equalisation; ocean buoy monitoring; performance; remote instrumentation; short vertically aligned transducer array; underwater acoustic transmission; widely spaced hydrophones; Acoustic testing; Acoustic transducers; Adaptive equalizers; Instruments; Oceans; Phase modulation; Phase shift keying; Remote monitoring; Sonar equipment; Underwater acoustics;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '96. MTS/IEEE. Prospects for the 21st Century. Conference Proceedings

Conference_Location

Fort Lauderdale, FL

Print_ISBN

0-7803-3519-8

Type

conf

DOI

10.1109/OCEANS.1996.568339

Filename

568339