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Robust High Accuracy Ultrasonic Range Measurement System

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Author(s)
Saad, Mohamed M. 
Bleakley, Chris J. 
Dobson, Simon 
Uri
http://hdl.handle.net/10197/3967
Date Issued
October 2011
Date Available
18T16:49:11Z December 2012
Abstract
This paper presents a novel method for ultrasonic range estimation. The method uses a wideband frequency-hop spread spectrum ultrasonic signal to increase robustness to noise and reverberation. The method applies cross-correlation with earliest peak search and a novel minimum variance search technique to correct the error in the cross-correlation time-of-flight estimate to within one wavelength of the carrier before applying a phase-shift technique for subwavelength range refinement. The method can be implemented digitally in software and only requires low-cost hardware for signal transmission and acquisition. Experimental results show an accuracy of better than 0.5 mm in a typical office environment.
Type of Material
Journal Article
Publisher
IEEE
Journal
IEEE Transactions On Instrumentation And Measurement
Volume
60
Issue
10
Start Page
3334
End Page
3341
Copyright (Published Version)
2011 IEEE
Keywords
  • Cross-correlation

  • Frequency-hop spread ...

  • Phase shift

  • Range estimation

  • Ultrasonic

Subject – LCSH
Signal processing
Frequencies of oscillating systems--Measurement
Ultrasonic waves
DOI
10.1109/TIM.2011.2128950
Language
English
Status of Item
Not peer reviewed
ISSN
0018-9456
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Computer Science Research Collection
Scopus© citations
73
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Feb 2, 2023
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