Hi!, If I understand correctly from kspaceFirstOrder3D.m, in case that a source and sensor is a transducer object, then the source is modeled as an "ux" addition, while the sensing is done by measuring the pressure. What is the justification for this discrepancy between sensing and transmitting? What is actually happening there physically?
Thanks!
Hi urital,
The radiation pattern from a real transducer depends on the boundary conditions surrounding the element. In practice, this is neither exactly a velocity or pressure source in k-Wave. When writing the kWaveTransducer class, we made the decision to use a velocity source as this increased the directionality of the elements. However, I agree it is slightly dubious that the transmit directivity corresponds to a dipole radiation pattern, and the receive directivity corresponds to a monopole radiation pattern.
Hope that helps,
Brad.
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