题目: An approximate factorization method for inverse medium scattering with unknown buried objects

报告人：曲风龙， 烟台大学

时间： 2017年7月4日上午9:30-10:30

地点：理科楼407

摘要：

In this talk, I will introduce the inverse problem of scattering of time-harmonic acoustic waves by an inhomogeneous medium with different kinds of unknown buried objects inside.By constructing a sequence of operators which are small perturbations of the far-field operator in a suitable way,we prove that each operator in this sequence has a factorization satisfying the Range Identity.We then develop an approximate factorization method for recovering the support of the inhomogeneous medium from the far-field data.Finally, numerical examples are provided to illustrate the practicability of the inversion algorithm.

报告人简介： 曲风龙，烟台大学副教授，毕业于中国科学院数学与系统科学研究院，研究兴趣是电磁散射问题及其反问题。主持国家自然科学基金委项目2项，山东省基金1项，在Inverse Problems, Communications in Mathematical Sciences 等多个国际SCI期刊发表多篇论文。