Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Measurement of Oblique Incidence Reflection Coefficient Using Beamforming Method

빔형성 방법을 이용한 경사 반사계수 측정

  • 주형준 (서울대학교 대학원 기계항공공학부) ;
  • 강연준 (서울대학교 기계항공공학부)
  • Published : 2003.06.01
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Abstract

A method using beamforming algorithm has been developed to measure oblique incidence reflection coefficients of sound absorption materials. MUSIC(multiple signal classification) method detects the angles of incidence and reflection. By separating the incident and reflected waves using beamforming method, the reflection coefficient is calculated. Spatial smoothing technique Is also used to reduce the coherence between the incident and reflected waves. Numerical and experiment results are performed to verify the accuracy of proposed method.

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References

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