BU MEMS Hydrophone - Crosstalk

I simulated Dan's experimental set-up for cross-talk measurements. It was assumed that the LDV is fixed and measuring the lower left hand corner element. The 2D images shows the measured amplitude in the lower-left corner as a function of the location of the focus of the ultrasound source. I used the theoretical beam pattern of a focussed ultrasound. I assumed that:
Each hydrophone element scattered sound scattering constant phi that did not vary with position in the array and that it was angle independent.
There was no multiple scattering - that is sound scattered by one element didn't rescatter off a second element.

I ran the scenario for two cases. The first where the scattered sound decayed with cylindrical (1/sqrt(r)) spreading and the second where the scattered sound decayed with spherical (1/r) spreading. I have also included Dan's measured results: both the needle and with the array. There appears to be atleast qualitative aggreement with the cylindrical spreading case at phi=0.3.

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