Computation of transient acoustic scattering from irregular-shaped objects using time domain integral equation method

Transient acoustic scattering contains rich information about objects. This paper studied the divergence in computation of the transient acoustic scattering by use of the time domain integral equation method. A calculation technique provided stable results for a long time calculation is presented. We extended the time domain integral equation method to the impedance object, and computed the transient acoustic backscattering of a hard and an impedance cylinder with a spheroidal end cap. The results show that the transient echoes have features of the highlight.