Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
권호 표지
DOI QR코드

DOI QR Code

Measurement and Arrival Direction Estimation of Supersonic Flight Sonic Boom

초음속 비행체의 소닉붐 측정과 도래각 추정

  • Received : 2020.11.17
  • Accepted : 2021.02.16
  • Published : 2021.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper studies measurement of sonic boom created by supersonic flight and its arrival angle estimation techniques. Since sonic boom propagates as an impulsive noise and includes infrasound frequency, we propose measurement instrumentation acquiring sonic boom signature without distortion. And we suggest the methodology for an arrival angle estimation with its performance analysis in accordance with sensor array configurations. The performance of our estimator is verified by comparing theoretical performance bound with statistics of its Monte-Carlo simulation results. Furthermore, we presents the analysis of the sonic boom measurement from real flight tests. This work provides an intuitive concept for sensor array configurations and measurement instrumentation.

초음속 비행체에서 발생하는 소닉붐은 일반적인 환경소음과 달리 초저주파 영역을 포함한 충격음으로 전파된다. 본 논문에서는 배열 음향센서를 이용하여 소닉붐의 특징을 왜곡 없이 측정하기 위한 계측방법과 소닉붐의 전파방향을 추정하기 위한 도래각 추정 방법에 대해 연구하였다. 음향센서의 배치에 따른 도래각 추정성능을 이론적인 방법으로 제시하였고 모의실험에서 얻은 통계값을 이용하여 본 연구에서 제안하는 도래각 추정 방법의 성능을 검증하였다. 또한 실제 초음속 비행체에서 발생한 소닉붐을 제안한 방법으로 측정하였고 그 결과를 분석하였다. 본 연구에서 얻은 결과로 소닉붐 측정을 위한 시스템 구성, 도래각 추정 방법과 그 성능에 대한 직관적인 개념을 제공하였다.

Keywords

References

  1. Jung, S. Y., Ha, J., Lee, Y. and Jin, H., "Prediction of Strength and Propagation Characteristics of Supersonic Flight Sonic Boom," Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 48, No. 7, 2020, pp. 497-504. https://doi.org/10.5139/JKSAS.2020.48.7.497
  2. Jung, S. Y., Ha, J., Lee, Y. and Jin, H., "Study on Sonic Boom Analysis and Measurement," ADDR-401-180452, Agency for Defence Development, 2018.
  3. Benson, L. R., Quieting the Boom (The Shaped Sonic Boom Demonstrator and the Quest fir Quiet Supersonic Flight), NASA Aeronautical Book Series, 2013.
  4. Hamilton, M. F. and Blackstock, D. T., Nonlinear Acoustics, Academic Press, 1997, pp. 66-72.
  5. Blackstock, D. T., Fundamentals of Physical Acoustics, New York, 1999, pp. 273-334.
  6. Kraus, J., Antennas for all applications, McGraw Hill, 2002, p. 832.
  7. Chan, Y. T. and Ho, K. C., "A Simple and Efficient Estimator for Hyperbolic Location," IEEE Transactions on Signal Processing, Vol. 42, No. 8, August, 1994, pp. 1905-1915. https://doi.org/10.1109/78.301830
  8. Kay, S. M., Fundamentals of Statistical Signal Processing: Estimation Theory, Prentice Hall, 1993, pp. 73-76.
  9. Azaria, M. and Hertz, D., "Time Dellay Estimation by Generalized Cross Correlation Methods," IEEE Transactions on Accoustic, Speech, and Signal Processing, Vol. ASSP-32, No. 2, April, 1984, pp. 280-285. https://doi.org/10.1109/TASSP.1984.1164314
  10. Cheon, D. S., Yu, J. M. and Lee, J. B., "Experimental Study on Microseismic Source Location by Dimensional Conditions and Arrival Picking Methods," Tunnel and Underground Space, Vol. 29, No. 4, 2019, pp. 243-261.
  11. Ha, J., Seo, D., Kim, J. and Min, J., "Performance Analysis of Interference Monitoring System Based on TDOA and AOA," Conference of Korean Institute of Science and Technology, 2016, pp. 396-397.
  12. Yoshida, K., "D-SEND#2 Flight Demonstration for Low Sonic Boom Design Technology," Proceeding of ICAS 2016, International Council of the Aeronautical Sciences, Daejeon, ROK, 2016, Paper 1.6.3.