中国物理B ›› 2016, Vol. 25 ›› Issue (12): 124318-124318.doi: 10.1088/1674-1056/25/12/124318
• SPECIAL TOPIC—Acoustics • 上一篇 下一篇
Array gain for a conformal acoustic vector sensor array: An experimental study
Yong Wang(汪勇), Yi-Xin Yang(杨益新), Zheng-Yao He(何正耀), Bo Lei(雷波), Chao Sun(孙超), Yuan-Liang Ma(马远良)
- 1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
Array gain for a conformal acoustic vector sensor array: An experimental study
Yong Wang(汪勇)1, Yi-Xin Yang(杨益新)2, Zheng-Yao He(何正耀)2, Bo Lei(雷波)2, Chao Sun(孙超)2, Yuan-Liang Ma(马远良)2
- 1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
摘要：
An acoustic vector sensor can measure the components of particle velocity and the acoustic pressure at the same point simultaneously, which provides a larger array gain against the ambient noise and a higher angular resolution than the omnidirectional pressure sensor. This paper presents an experimental study of array gain for a conformal acoustic vector sensor array in a practical environment. First, the manifold vector is calculated using the real measured data so that the effects of array mismatches can be minimized. Second, an optimal beamformer with a specific spatial response on the basis of the stable directivity of the ambient noise is designed, which can effectively suppress the ambient noise. Experimental results show that this beamformer for the conformal acoustic vector sensor array provides good signal-to-noise ratio enhancement and is more advantageous than the delay-and-sum and minimum variance distortionless response beamformers.
中图分类号: (Acoustic array systems and processing, beam-forming)
- 43.60.Fg