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Resonance Enhancement in Noise

Cheney, Margaret LU ; Kim, Jerry ; Kirsteins, Ivars and Kristensson, Gerhard LU (2023) In Technical Report LUTEDX/(TEAT-7280)/1-21/(2023)
Abstract
This document compares two approaches to finding resonance peaks from a
single sensor: 1) averaging multiple measurements of the transfer function or
frequency-domain scattering matrix, versus 2) using the iterative time-reversal
process, which involves iteratively re-transmitting a time-reversed version of
the scattered field at the previous iterations. The averaging method has the
advantage of handling arbitrarily much noise if sufficiently many averages are
used. On the other hand, up to a certain level of noise, the time-reversal
method has dramatic advantages over the averaging method; but it also requires more complex equipment. This document discusses the tradeoffs involved, with the goal of providing... (More)
This document compares two approaches to finding resonance peaks from a
single sensor: 1) averaging multiple measurements of the transfer function or
frequency-domain scattering matrix, versus 2) using the iterative time-reversal
process, which involves iteratively re-transmitting a time-reversed version of
the scattered field at the previous iterations. The averaging method has the
advantage of handling arbitrarily much noise if sufficiently many averages are
used. On the other hand, up to a certain level of noise, the time-reversal
method has dramatic advantages over the averaging method; but it also requires more complex equipment. This document discusses the tradeoffs involved, with the goal of providing information that may be useful in the system design process.
(Less)
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publication status
published
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Technical Report LUTEDX/(TEAT-7280)/1-21/(2023)
pages
21 pages
report number
TEAT-7280
language
English
LU publication?
yes
id
16a99236-f209-4580-98cd-16bca4c60aaf
date added to LUP
2023-11-28 14:46:22
date last changed
2023-11-28 16:11:34
@techreport{16a99236-f209-4580-98cd-16bca4c60aaf,
  abstract     = {{This document compares two approaches to finding resonance peaks from a<br/>single sensor: 1) averaging multiple measurements of the transfer function or<br/>frequency-domain scattering matrix, versus 2) using the iterative time-reversal<br/>process, which involves iteratively re-transmitting a time-reversed version of<br/>the scattered field at the previous iterations. The averaging method has the<br/>advantage of handling arbitrarily much noise if sufficiently many averages are<br/>used. On the other hand, up to a certain level of noise, the time-reversal<br/>method has dramatic advantages over the averaging method; but it also requires more complex equipment. This document discusses the tradeoffs involved, with the goal of providing information that may be useful in the system design process.<br/>}},
  author       = {{Cheney, Margaret and Kim, Jerry and Kirsteins, Ivars and Kristensson, Gerhard}},
  language     = {{eng}},
  number       = {{TEAT-7280}},
  series       = {{Technical Report LUTEDX/(TEAT-7280)/1-21/(2023)}},
  title        = {{Resonance Enhancement in Noise}},
  url          = {{https://lup.lub.lu.se/search/files/165801999/TEAT-7280.pdf}},
  year         = {{2023}},
}