Scattering of Brillouin precursor fields from objects inside water

The feature which is common in figs. 2(a) to (d) is the bell shape of all the curves. The maximum appears at the sampling point which is closest to the object and the energy decreases as the sampling point moves away from the object. As expected, comparing the figures shows that the scattered field energy is higher for objects with bigger sizes. The figures also show that the scattered energy for double Brillouin pulse is larger than the reference Gaussian pulses under identical conditions in terms of the location and size of the object. In other words, the double Brillouin pulse has a better performance than the corresponding Gaussian pulse. We have also compared the double Brillouin pulse with modulated rectangular and sinusoidal pulses in terms of the energy of the scattered field. The simulation results show that the double Brillouin pulse also has superior performance with respect to these pulses in terms of the energy of the scattered field. These results will be discussed in the presentation.