Proposal of Ultra-Short-Pulse Acoustic Imaging Using Complex-Valued Spatio-temporal Neural-Network Null-Steering

  • Kotaro Terabayashi
  • Akira Hirose
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8228)


We propose complex-valued spatio-temporal neural-network null- steering for wideband acoustic imaging with ultra-short pulses. We combine a complex-valued neural network (CVNN) and power-inversion adaptive array (PIAA) scheme to realize a practical-resolution imaging in the azimuth direction (direction perpendicular to the range direction) even with a small-aperture array. Simulations suggest that the proposed method presents a higher resolution than conventional methods such as Capon’s method as well as a real-valued neural-network PIAA method.


Acoustic imaging power-inversion adaptive array (PIAA) complex-valued spatio-temporal neural network (CVSTNN) 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Kotaro Terabayashi
    • 1
  • Akira Hirose
    • 1
  1. 1.Department of Electrical Engineering and Information SystemsThe University of TokyoBunkyo-kuJapan

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