Reconstructing the acoustic far-field using a semi-circular sensor array

Jun Bo Su1, Cheng Min Wang2, Yu Jie Xiao3

1PLA 91370, Fuzhou, China

2Naval University of Engineering, Wuhan, China

3Naval Academy of Armament, Beijing, China

2Corresponding author

E-mail: 1sujunbo0618@163.com, 2chengm_wang0925@163.com, 3825807129@qq.com

Received 20 September 2017; accepted 28 September 2017

DOI https://doi.org/10.21595/vp.2017.19190

 

Abstract. A method to reconstruct the acoustic far-field using a semi-circular sensor array is proposed. Firstly, the pressures in the acoustic far-field are measured by a semi-circular sensor array; then, the acoustic far-field is reconstructed based on the theory of acoustic radiation modes. The numerical simulations for reconstructing the acoustic far-field of a baffled rectangular plate are conducted. The results show that the acoustic far-field of the baffled rectangular plate can be reconstructed accurately by a few sensors on the semi-circular array. The influence of noise to the reconstruction of acoustic field is analyzed, and the robustness of the proposed method is proved. This paper provides a method for the reconstruction of acoustic far-field through a simple measuring array. The method can be applied to the acoustic field reconstruction of large structures, and has good engineering application prospects.

Keywords: sensor array, acoustic field reconstruction, acoustic radiation modes, acoustic far‑field.

References

[1]        Veronesi W. A., Maynard J. D. Near-field acoustic holography (NAH) II: holographic reconstruction, algorithms and computer implementation. Journal of the Acoustical Society of America, Vol. 81, Issue 5, 1987, p. 1307‑1322.

[2]        Bai M. R. Application of BEM (boundary element method)-based acoustic holography to radiation analysis of sound sources with arbitrarily shaped geometries. Journal of the Acoustical Society of America, Vol. 92, Issue 1, 1992, p. 533‑549.

[3]        Koopmann G. H., Song L., Fahnline J. B. A method for computing accoustic fields based on the principle of wave superposition. Journal of the Acoustical Society of America, Vol. 86, Issue 6, 1989, p. 2433‑2438.

[4]        Wu S. F. On reconstruction of acoustic pressure fields using the Helmholtz equation least squares method. Journal of the Acoustical Society of America, Vol. 107, Issue 5, 2000, p. 2511‑2522.

[5]        Zhang Shengyong, Chen Xinzhao The boundary point method for the calculation of exterior acoustic radiation problem. Journal of Sound and Vibration, Vol. 228, Issue 4, 1999, p. 761‑772.

[6]        Lei Xuan Yang, Chen Jin, Zhang Gui Cai, Chen Shao Lin The reconstruction of sound field using helmholtz equation-least squares method. Journal of Shang Hai Jiao Tong University, Vol. 40, Issue 1, 2006, p. 129‑132.

[7]        Nie Yong Fa, Zhu Hai Chao Acoustic field reconstruction using source strength density acoustic radiation modes. Acta Physica Sinica, Vol. 63, Issue 10, 2014, p. 104303.

[8]        Jiang Zhe A modal analysis for the acoustic radiation problems III. Reconstruction of acoustic fields. Acta Acustica, Vol. 30, Issue 3, 2005, p. 242‑248.

[9]        Yang Dong Sheng, Jiang Zhe Application of acoustic radiation modes to acoustic field reconstruction. Noise and Vibration Control, Vol. 2, 2009, p. 55‑58.

[10]     Wu Haijun Study on Computational Methods and Applicetions for Large Scale Acoustic Problems Based on the Fast Multiple Boundary Element Method. Shanghai JiaoTong University, 2013.

Cite this article

Su Jun Bo, Wang Cheng Min, Xiao Yu Jie Reconstructing the acoustic far‑field using a semi‑circular sensor array. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 278‑282.

 

JVE International Ltd. Vibroengineering PROCEDIA. Oct 2017, Vol. 14. ISSN 2345-0533