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Robust correlation receiver for distance estimation

Eriksson, Håkan; Börjesson, Per Ola LU ; Ödling, Per LU and Holmer, Nils-Gunnar LU (1994) In IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 41(5). p.596-603
Abstract
Many methods for distance estimation, such as the ultrasonic pulse-echo method, involve the estimation of a time-of-flight (TOF). In this paper, a signal model is developed that, apart from the TOF, accounts for an unknown, linear frequency dependent distortion as well as for additive noise. We derive a TOF estimator for this model based on the criteria of maximum likelihood. The resulting receiver can be seen as an extension or generalization of the well known cross-correlation, or “matched filter”, estimator described, e.g., by Nilsson. The novel receiver is found to be more robust against unknown pulse shape distortion than the cross-correlation estimator, giving less biased TOF estimates. Also, bias versus noise sensitivity can be... (More)
Many methods for distance estimation, such as the ultrasonic pulse-echo method, involve the estimation of a time-of-flight (TOF). In this paper, a signal model is developed that, apart from the TOF, accounts for an unknown, linear frequency dependent distortion as well as for additive noise. We derive a TOF estimator for this model based on the criteria of maximum likelihood. The resulting receiver can be seen as an extension or generalization of the well known cross-correlation, or “matched filter”, estimator described, e.g., by Nilsson. The novel receiver is found to be more robust against unknown pulse shape distortion than the cross-correlation estimator, giving less biased TOF estimates. Also, bias versus noise sensitivity can be controlled by proper model order selection (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
volume
41
issue
5
pages
596 - 603
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:0028501277
ISSN
0885-3010
DOI
10.1109/58.308494
language
English
LU publication?
yes
id
9500d668-f427-4c86-996e-6796cffc46ba (old id 1056079)
date added to LUP
2008-04-11 10:37:16
date last changed
2017-08-27 05:47:40
@article{9500d668-f427-4c86-996e-6796cffc46ba,
  abstract     = {Many methods for distance estimation, such as the ultrasonic pulse-echo method, involve the estimation of a time-of-flight (TOF). In this paper, a signal model is developed that, apart from the TOF, accounts for an unknown, linear frequency dependent distortion as well as for additive noise. We derive a TOF estimator for this model based on the criteria of maximum likelihood. The resulting receiver can be seen as an extension or generalization of the well known cross-correlation, or “matched filter”, estimator described, e.g., by Nilsson. The novel receiver is found to be more robust against unknown pulse shape distortion than the cross-correlation estimator, giving less biased TOF estimates. Also, bias versus noise sensitivity can be controlled by proper model order selection},
  author       = {Eriksson, Håkan and Börjesson, Per Ola and Ödling, Per and Holmer, Nils-Gunnar},
  issn         = {0885-3010},
  language     = {eng},
  number       = {5},
  pages        = {596--603},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control},
  title        = {Robust correlation receiver for distance estimation},
  url          = {http://dx.doi.org/10.1109/58.308494},
  volume       = {41},
  year         = {1994},
}