FIG. 7.
(Color online) Validation of the numerical algorithm for calculating the linear field generated by the array in water. Pressure amplitude distributions pA/p0 normalized to the initial pressure p0 at the array elements (a) along and (b) transverse the array axis in the focal plane. “Analytical” denotes the use of the analytical method for simulating the array field within the far-field approximation of each element, “Rayleigh” is the direct calculation of the Rayleigh integral, and “k-Wave” is the pseudo-spectral time domain simulation from boundary 1 (Fig. 4).