Reversible quasi-holographic line-scan and circular aperture processing for acoustic imaging and feature isolation

• Published in: The Journal of the Acoustical Society of America 2013-11, Vol.134 (5_Supplement), p.3981-3981
• Main Authors: Plotnick, Daniel, Marston, Phillip L., Zartman, David J., Smith, Anthony R.
• Format: Article
• Language: English
• ISSN: 0001-4966; 1520-8524
• DOI: 10.1121/1.4830505

One-dimensional line scans of objects by a collocated source/receiver can be processed via a linear quasi-holographic method [Baik et al., J. Acoustic Soc. Am. 130, 3838–3851 (2011)] to produce an image in a way that is reversible for signal isolation. Distinct image features such as those due to edge diffraction, specular reflection, or elastic effects can then be extracted in the image domain. Images are then reverse processed to allow examination of the isolated features in time and spectral domains and removal of clutter [Zartman et al., Proceedings of Meetings on Acoustics (POMA) (June, 2013), Vol. 19, p. 055011]. In related research monostatic data from a circular synthetic aperture may be reversibly processed in a way favorable for feature extraction [Marston et al., Proc. IEEE Oceans 2011 (2011)]. Experimental examples comparing extracted features with physical models will be discussed. [Work supported by ONR.]