Chin. Phys. Lett.  2018, Vol. 35 Issue (11): 114301    DOI: 10.1088/0256-307X/35/11/114301
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
A Sound Field Separation and Reconstruction Technique Based on Reciprocity Theorem and Fourier Transform
Xiao-Lei Li1**, Ning Wang1, Da-Zhi Gao1, Qi Li2
1Department of Marine Technology, Ocean University of China, Qingdao 266100
2College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150006
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Xiao-Lei Li, Ning Wang, Da-Zhi Gao et al  2018 Chin. Phys. Lett. 35 114301
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Abstract We show a method to separate the sound field radiated by a signal source from the sound field radiated by noise sources and to reconstruct the sound field radiated by the signal source. The proposed method is based on reciprocity theorem and the Fourier transform. Both the sound field and its gradient on a measurement surface are needed in the method. Evanescent waves are considered in the method, which ensures a high resolution reconstruction in the near field region of the signal source when evanescent waves can be measured. A simulation is given to verify the method and the influence of measurement noise on the method is discussed.
Received: 18 June 2018      Published: 23 October 2018
PACS:  43.60.+d (Acoustic signal processing)  
  43.60.Sx (Acoustic holography)  
  43.60.Jn (Source localization and parameter estimation)  
  43.60.Lq (Acoustic imaging, displays, pattern recognition, feature extraction)  
Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11374270 and 11674294.
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https://cpl.iphy.ac.cn/10.1088/0256-307X/35/11/114301       OR      https://cpl.iphy.ac.cn/Y2018/V35/I11/114301
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Xiao-Lei Li
Ning Wang
Da-Zhi Gao
Qi Li
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