Impulse response estimation method for ultrasound arrays

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1 Citation (Scopus)

Abstract

We present a method for estimating the one-way electro-mechanical impulse response or transfer function of self-reciprocal ultrasound transducers. The one-way impulse response is needed for forward field simulations, or for pulseecho simulations and excitation code design when the oneway impulse response per array element is different. Using a flat plate reflector that is positioned parallel to the transducer surface, the resulting pulse-echo signal is measured. Since the transducer is self-reciprocal, the transmit and receive impulse responses are equivalent. Consequently, the measured signal is the autoconvolution of the one-way impulse response. We propose a new de-autoconvolution algorithm to obtain the one-way impulse response from such a signal. The proposed measurement procedure is especially time-efficient for large arrays, and does not rely on hydrophones or additional transducers. Experimental results are shown to demonstrate the effectiveness of the proposed method.
Original languageEnglish
Title of host publication2017 IEEE International Ultrasonics Symposium (IUS)
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages1-4
Number of pages4
ISBN (Electronic)978-1-5386-3383-0
DOIs
Publication statusPublished - 2017
Event2017 IEEE International Ultrasonics Symposium - Washington, DC, United States
Duration: 6 Sep 20179 Sep 2017
http://ewh.ieee.org/conf/ius/2017/

Conference

Conference2017 IEEE International Ultrasonics Symposium
Abbreviated titleIUS 2017
CountryUnited States
CityWashington, DC
Period6/09/179/09/17
Internet address

Keywords

  • Pulse measurements
  • Transducers
  • Sonar equipment
  • Ultrasonic imaging
  • Discrete Fourier transforms
  • Ultrasonic variables measurement
  • Correlation

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