典型文献
Nearfield acoustic holography in a moving medium based on particle velocity input using nonsingular propagator
文献摘要：
Nearfield acoustic holography in a moving medium is a technique which is typically suitable for sound sources iden-tification in a flow.In the process of sound field reconstruction,sound pressure is usually used as the input,but it may contain considerable background noise due to the interactions between microphones and flow moving at a high velocity.To avoid this problem,particle velocity is an alternative input,which can be obtained by using laser Doppler velocimetry in a non-intrusive way.However,there is a singular problem in the conventional propagator relating the particle velocity to the pressure,and it could lead to significant errors or even false results.In view of this,in this paper,nonsingular propagators are deduced to realize accurate reconstruction in both cases that the hologram is parallel to and perpendicular to the flow direction.The advantages of the proposed method are analyzed,and simulations are conducted to verify the validation.The results show that the method can overcome the singular problem effectively,and the reconstruction errors are at a low level for different flow velocities,frequencies,and signal-to-noise ratios.
文献关键词：
中图分类号：
作者姓名：
Bi-Chun Dong;Run-Mei Zhang;Bin Yuan;Chuan-Yang Yu
作者机构：
Department of Mechanical & Electrical Engineering School,Anhui Jianzhu University,Hefei 230601,China
文献出处：
引用格式：
[1]Bi-Chun Dong;Run-Mei Zhang;Bin Yuan;Chuan-Yang Yu-.Nearfield acoustic holography in a moving medium based on particle velocity input using nonsingular propagator)[J].中国物理B（英文版）,2022(02):463-472
A类：
Nearfield,propagator,microphones,propagators
B类：
acoustic,holography,moving,medium,particle,velocity,input,using,nonsingular,technique,which,typically,suitable,sound,sources,iden,tification,flow,In,process,reconstruction,pressure,usually,used,but,may,contain,considerable,background,noise,due,interactions,between,high,To,avoid,this,problem,alternative,obtained,by,laser,Doppler,velocimetry,intrusive,way,However,there,conventional,relating,could,lead,significant,errors,even,false,results,view,paper,are,deduced,realize,accurate,both,cases,that,hologram,parallel,perpendicular,direction,advantages,proposed,method,analyzed,simulations,conducted,verify,validation,show,overcome,effectively,level,different,velocities,frequencies,signal,ratios
AB值：
0.506674
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
