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Sub-band processing of synthetic aperture sonar data

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4 Author(s)
Silva, S.R. ; Porto Univ., Porto ; Cunha, S. ; Matos, A. ; Cruz, N.

High frequency synthetic aperture sonar systems require demanding tolerances in motion errors and medium phase stability. This article proposes a new method that mitigates the problems associated with small wavelength related errors. By dividing the received signal bandwidths in to several smaller ones and conjugate complex multiplying them, a new signal is obtained with longer effective wavelength, thus reducing the impact of motion errors and medium phase fluctuations.

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15-18 Sept. 2008

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