Array processing for wave vectors and modes in structural acoustics
Arthur B. Baggeroer · The Journal of the Acoustical Society of America · 1991
Array processing methods have emphasized beamforming and directional spectrum estimation for equally spaced, linear arrays with single component sensors that are in a homogeneous signal field with long duration data. Structural acoustics problems often have just the opposite characteristics with irregular spacing of multicomponent sensors that are in inhomogeneous wave fields with transient data. These eliminate many array processing methods and require generalization of others. Recently, array processing methods such as matched field and matched mode, slowness-time spectra, and singular value decomposition have been advanced and used for structural acoustics. This presentation will give an overview of advanced array processing methods with an emphasis on those applicable to problems in structural acoustics. [Work supported by ONR.]