Abstract
A new echolocation and imaging system is described which requires no mechanical nor electrical scan and uses small numbers of signal channels. This system acquires data for an image-forming with only a single transmitting and receiving process, and the image-forming can be performed entirely digitally. These properties are made possible by a new acoustical sensor with an impulse response from which we can distinguish the direction of a received or transmitted wavefront. We call the sensor an “Encoding Aperture”(EA). An implementation of the sensor and beam-forming characteristics are introduced. Finally, we demonstrate a point spread function of a 3-D imaging system using only two “Encoding Aperture Receivers” (EARs).
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© 1991 Springer Science+Business Media New York
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Tamura, Y., Akatsuka, T. (1991). An Echolocation and Imaging Using Transducers of Directionally Distinguishable Impulse Response. In: Lee, H., Wade, G. (eds) Acoustical Imaging. Acoustical Imaging, vol 18. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3692-5_9
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DOI: https://doi.org/10.1007/978-1-4615-3692-5_9
Publisher Name: Springer, Boston, MA
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