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本文提出了一种非均匀介质背景的散射层析成像方法。它的基本思想是利用波场的正向传播和反向传播原理，将非均匀介质背景的散射层折成像转化为均匀介质背景的散射层析成像，然后利用业以成熟的均匀介质背景的散射层析成像方法进行成像。为了既要减少计算时所占用的大量内存和机时，又要保证计算精度，在波场正传和反传中利用Maslov射线理论计算格林函数，且采用了快速的有限差分射线追踪方法。最后利用理论试界检验了方法的正确性和有效性。
This paper presents a method of scattering tomography of non-uniform media background. Its basic idea is to make use of the principle of forward propagation and back propagation of wavefields to diffuse the scattering layer of heterogeneous medium background into the scattering tomography of homogeneous medium background and then utilize the scattering of mature homogeneous medium background Tomography method for imaging. In order to reduce the amount of memory and machine time involved in the calculation, we also need to ensure the accuracy of the calculation. The Maslov ray theory is used to calculate the Green’s function in the forward and backward wave fields, and the fast finite difference ray tracing method is used. At last, the correctness and effectiveness of the method are tested by the theory of the experimental field.