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Sonar Waveforms for Reverberation Rejection, Part II: Experimental results

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Author: Been, R. · Beerens, S.P. · IJsselmuide, S.P. van · Prunel, B.
Type:article
Date:2000
Publisher: Nexus Media Ltd
Place: Swanley, Kent
Institution: TNO Fysisch en Elektronisch Laboratorium
Source:UDT Pacific 2000 - Conference Proceedings Undersea Defence Technology, 7-9 February 2000, Darling Harbour, Australia, 25-30
Identifier: 95371
Keywords: Physics · Sonar reverberation · Sonar waveforms · Sonar arrays · Shallow water · Sea trials · Performance tests

Abstract

The influence of the waveform of the transmitted signal on the signal to reverberation ratio of a moving sonar array is analysed on an experimental basis. Experiments were conducted during sea-trials in shallow water areas in September 98 and October 99. The aim of the trials was to compare the performance of three waveforms: frequency modulated (FM) signals, continuous wave (CW) signals and a train of linear FM pulses (FM Train). Transmissions were combined (CW/FM and CW/FM Train) in order to compare the performance of the three signals on the same basis. Experimental results on signal to reverberation ratios are presented and compared to theory.