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Phase error estimation and correction in acoustic microscopy

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2 Author(s)
Lee, H. ; Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA ; Chiao, R.Y.

Consideration is given to the phase error estimation and correction problem in tomographic acoustic microscopy. In a recent paper, Z.C. Lin and G. Wade (ibid., vol.ASSP-35, p.1037-45, July 1987) modeled the phase error as a constant and proposed a single-sideband technique for its correction. The present authors point out that the phase error is not a constant, and that the single-sideband technique removes only the effect of the error in the displayed image. They propose a new method for estimating and correcting the spatially varying phase error. The method is demonstrated for experimental data from the scanning laser and acoustic microscope

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Acoustics, Speech and Signal Processing, IEEE Transactions on  (Volume:38 ,  Issue: 1 )