Acoustical Imaging Via Coherent Reception of Spatially Coloured Transmission

  • P. Tournois
Part of the Acoustical Imaging book series (ACIM, volume 10)


If the transducers of an array transmit different signals simultaneously, the insonified space is “coloured” since a particular resulting signal corresponds to each direction. At the receiver’s end, classical beamforming is performed as if insonification were isotropic. Next, each formed beam output is fed into the filter matched to the signal transmitted into that particular direction; a gain in angular resolution results, which is equal to that of the product of the transmit-receive antenna patterns although no directional transmission was required.


Delay Line Angular Resolution Directional Transmission Matched Filter Directivity Pattern 


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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • P. Tournois
    • 1
  1. 1.ASM DivisionThomson-CSFCagnes-sur-MerFrance

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