Publication
Title
Superresolution underwater acoustics
Author
Abstract
We explore the application of some recent results in exponential analysis and sparse interpolation to underwater acoustics, in a joint effort from marine engineers and computational mathematicians. The fact that, in practice, the sampling rate used for the recording of an echoed signal is often a multiple of the Nyquist rate, is regarded as a constraint on the cost and performance of echo sounding devices. Here we illustrate how the latter can be overcome, using a new regular sampling scheme, that can even go well below the Nyquist rate. In the numerical examples an average of 20-25 % of the Nyquist rate is amply sufficient to reliably recognize and reconstruct the echo. The sparse sub-Nyquist method under consideration allows to recover from possible aliasing introduced by the subsampling. The technique does not need newly designed hardware, has low computational complexity and uses a small number of samples.
Language
English
Source (journal)
Euronoise proceedings
Source (book)
Euronoise, 2018, Crete, Greece
Publication
2018
Volume/pages
(2018), p. 2845-2850
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
Sub-Nyquist underwater communication.
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Record
Identification
Creation 01.10.2018
Last edited 15.07.2021
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