Results 101 to 110 of about 9,039,126 (121)

Partial source discrimination in near field acoustic holography

Applied Acoustics, 1999
Abstract Decomposition techniques based on principal component analysis (PCA) and partial coherent output power (PCOP) analysis are applied to scanning near field acoustic holography (NAH) in order to identify partial sources. Where location of partial sources is uncertain, inaccessible, or the underlying physical process is not well understood ...
openaire   +1 more source

Extension of measurement surface in near-field acoustic holography

The Journal of the Acoustical Society of America, 2004
In near-field acoustic holography, when measurements are made over a limited surface, there has been recent interest in numerically enlarging the measurement surface tangentially. Current algorithms use iterative methods to extrapolate the field tangentially outward. An algorithm based on the method of superposition is applied here which may be used to
openaire   +1 more source

A 3D convolutional neural network based near-field acoustical holography method with sparse sampling rate on measuring surface

Measurement: Journal of the International Measurement Confederation, 2021
Zhifu Zhang, Jiaxuan Wang
exaly  

Development of Near-Field Acoustic Holography

Applied Physics, 2018
openaire   +1 more source

Underwater moving noise source identification based on hybrid near-field acoustical holography

Science China: Physics, Mechanics and Astronomy, 2011
Shengguo Shi, Bo Hu, Desen Yang
exaly  

Underwater hybrid near-field acoustical holography based on the measurement of vector hydrophone array

Science China: Physics, Mechanics and Astronomy, 2010
Bo Hu, Desen Yang
exaly  

Near-field acoustical holography in cylindrical spaces

The Journal of the Acoustical Society of America, 1993
openaire   +1 more source

Underwater patch near-field acoustical holography based on particle velocity and vector hydrophone array

Science China: Physics, Mechanics and Astronomy, 2012
Shengguo Shi, Bo Hu, Desen Yang
exaly  

Application of cylindrical near-field acoustical holography to the visualization of aeroacoustic sources

Journal of the Acoustical Society of America, 2003
Luc Mongeau, J Stuart Bolton
exaly  

SCANNING NEAR FIELD THERMOELASTIC ACOUSTIC HOLOGRAPHY (SNFTAH)

2011
SHEKHAWAT GAJENDRA S, DRAVID VINAYAK P
openaire   +3 more sources