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Updated: Jun 5, 2025

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
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Ultrasonic wind vector measurement based on quadratic correlation two-frequency phase method.

Zebiao Shan1, Mingxuan Han2, Xiaosong Liu2

  • 1School of Electronic and Information Engineering, Changchun University of Science and Technology, Changchun 130022, China; Changchun Meteorological Instrument Research Institute, Changchun 130102, China; College of Communication Engineering, Jilin University, Changchun 130022, China.

ISA Transactions
|December 5, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a new ultrasonic wind measurement method using quadratic correlation and two-frequency phase difference techniques. The enhanced approach improves accuracy and range, overcoming limitations of traditional phase difference methods in low signal-to-noise conditions.

Keywords:
Phase methodQuadratic correlationTwo-frequencyUltrasonic wind measurement

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Area of Science:

  • Meteorology
  • Acoustics
  • Instrumentation

Background:

  • Traditional ultrasonic wind measurement methods face challenges with limited range and low accuracy, especially at low signal-to-noise ratios.
  • The phase difference method is particularly susceptible to noise, impacting reliable wind speed and direction measurements.

Purpose of the Study:

  • To develop an improved ultrasonic wind speed and direction measurement method.
  • To overcome the range limitations and low accuracy issues of existing phase difference techniques.

Main Methods:

  • Utilized a quadratic correlation phase method combined with a four-step phase shift technique for phase difference estimation.
  • Employed an opposing-type Array Structure for wind measurement.
  • Extended the measurement range using a two-frequency phase difference method.

Main Results:

  • The proposed method effectively estimates phase difference even in low signal-to-noise conditions.
  • Practical tests demonstrated maximum measurement errors within 0.28m/s for wind speed and 2.8° for direction angles.
  • The system's performance aligns with the design requirements for ultrasonic anemometers.

Conclusions:

  • The quadratic correlation phase method offers a robust solution for accurate ultrasonic wind speed and direction measurement.
  • The developed system provides reliable wind data, suitable for various meteorological applications.