Reverberation Suppression Using Wideband Doppler-Sensitive Pulses
article
Abstract—The influence of transmitted waveforms on the signal-to-reverberation ratio (SRR) of a low-frequency active sonar is analyzed both theoretically and experimentally. Reverberation experiments have been conducted during a sea trial in a littoral water environment in October 1999. The aim of the trials
was to compare the performance of three classes of waveforms: standard hyperbolic frequency-modulated (HFM) waveforms,
continuous waveforms (CWs), and innovative pulse trains of linear frequency-modulated (PTFM) waveforms. Transmissions were
combined (CW/PTFM train) or intermitted (HFM) to compare the performance of the three classes in (exactly) the same environment.
Experimental results in highly reverberant environment illustrated that PTFM pulses allow a reduction in reverberation
power greater than 10 dB over the standard detection pulses for slowly moving targets. The results are in agreement with
theoretical predictions.
was to compare the performance of three classes of waveforms: standard hyperbolic frequency-modulated (HFM) waveforms,
continuous waveforms (CWs), and innovative pulse trains of linear frequency-modulated (PTFM) waveforms. Transmissions were
combined (CW/PTFM train) or intermitted (HFM) to compare the performance of the three classes in (exactly) the same environment.
Experimental results in highly reverberant environment illustrated that PTFM pulses allow a reduction in reverberation
power greater than 10 dB over the standard detection pulses for slowly moving targets. The results are in agreement with
theoretical predictions.
TNO Identifier
28537
Source
IEEE Journal of Oceanic Engineering, 33(October), pp. 419-433.
Pages
419-433
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