报告题目:A Time-domain direct sampling approach for inverse scattering problems
报 告 人:汪贤超 副教授 哈尔滨工业大学
报告时间:2024年12月20日 15:00-16:00
报告地点:数学楼三楼研讨室5
校内联系人:吕俊良 lvjl@jlu.edu.cn
报告摘要:In this talk, we introduce an inverse scattering problem of determining unknown scatterers from time-dependent acoustic measurements. A novel time-domain direct sampling method is developed to efficiently determine both the locations and shapes of inhomogeneous media. In particular, our approach is very easy to implement since only cheap space-time integrations are involved in the evaluation of the imaging functionals. Using the Fourier-Laplace transform, we establish an inherent connection between the time-domain and frequency-domain direct sampling method.
报告人简介:汪贤超,哈尔滨工业大学副教授。2019年毕业于哈尔滨工业大学,获理学博士学位。目前研究领域为数学物理反问题,主要集中于反散射问题的数值分析与计算,涵盖波源反演、目标追踪、超声测温、超分辨率成像以及共振隐形等方向。迄今为止,已在SCI期刊上发表论文20余篇。主持国家自然科学基金青年项目和面上项目,并于2019年入选香江学者计划,2023年入选洪堡学者。