Establishment of Acoustic Scattering Field with Precise Description

From the ultrasonic wave propagation characteristics in a continuous medium of departure, acoustic propagation in inhomogeneous media problems were studied based on the basis of the wave equation established of acoustic wave propagation in the homogeneous medium. The wave equations on the scattering filed and the whole field were established through Green′s function. In order to facilitate the use of computers and other processors, the method of moments was introduced into the discrete equation. The method provided a theoretical basis for solving the wave equation. Simulation experiments confirmed that using iterative method ultrasonic scattering tomography can be realized based on the wave equations.