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A Doppler signal simulator.

C A Bastos1, P J Fish

  • 1School of Electronic Engineering Science, University of Wales, Bangor, UK.

Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Fur Medizinische Physik and the European Federation of Organisations for Medical Physics
|May 1, 1991
PubMed
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A novel simulated Doppler signal generator was created using computer-controlled filtering of noise. This instrument precisely generates Doppler signals for testing signal analysis equipment.

Area of Science:

  • Biomedical Engineering
  • Signal Processing

Background:

  • Doppler signal analysis is crucial for various applications, including medical imaging and flow measurement.
  • Accurate testing of Doppler signal analyzers requires reliable and well-characterized simulated signals.

Purpose of the Study:

  • To develop a versatile instrument for generating simulated Doppler signals with controlled spectral characteristics.
  • To provide a tool for the rigorous testing and validation of Doppler signal analysis systems.

Main Methods:

  • A broad-band noise source was utilized as the base signal.
  • Computer-controlled band-pass filtering techniques were employed to shape the noise into Doppler signals.
  • The spectral characteristics of the generated signals were precisely controlled.

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Main Results:

  • A functional simulated Doppler signal generator was successfully developed.
  • The instrument demonstrated the capability to produce signals with known and adjustable spectral properties.
  • The generated signals are suitable for testing Doppler signal analyzers.

Conclusions:

  • The developed instrument offers a reliable method for creating simulated Doppler signals.
  • This tool enhances the ability to test and calibrate Doppler signal analysis equipment accurately.
  • The generator facilitates advancements in the performance evaluation of Doppler-based systems.