报告题目：An inverse obstacle scattering in complex medium

主 讲 人：张磊（黑龙江大学数学科学学院教授）

报告邀请人：郑恩希 副教授

报告时间：2020年11月13日13:30-15:00

报告地点：腾讯会议，会议 ID：751 450 393

会议链接：https://meeting.tencent.com/s/FfYLn5XEfvKO

报告摘要： In this talk, we mainly focus on acoustic waves and electromagnetic wave cases. The asymptotic behavior of Green’s tensor function is analyzed and plays an important role in the analysis of the well-posedness of the direct problem. Based on the related boundary integral equation method, we prove the well-posedness of the composite scattering problem. For the inverse problem, we intend to answer the following question: what information can we extract about the obstacle and the unbounded rough surface from the tangential trace of the electric field measured on the plane surface which is above and below the obstacle and unbounded rough surface, respectively? We show that any two obstacles and unbounded rough surfaces are identical if they generate the same data.

个人简历：张磊，现任黑龙江大学教授、硕导，黑龙江省数学会理事、黑龙江省工业与应用数学会理事。2013年毕业于吉林大学数学研究所，获得理学博士学位。随后在浙江大学数学系从事博士后研究工作。2018年在美国普渡大学做访问学者一年。研究方向为数学物理反问题，特别关注声学、电磁学散射与反散射，粗糙表面散射与反散射问题的数学理论及计算方法。先后主持国家自然科学基金面上项目、青年项目及省部级项目八项。在Inverse Problems (high light article) ，Journal of Computational Physics，SIAM Journal on Imaging Sciences等学术期刊上发表学术论文二十余篇。