应兰州大学数学与统计学院魏婷教授，燕雄斌副教授，和杨志鹏副教授邀请, 北京航空航天大学刘晓莉副教授将于2026年06月29日上午作学术报告，欢迎全校师生参加.

报告题目：An Inverse Obstacle Scattering Problem with Passive Data in the Time Domain

时间：2026年6月29日(星期一) 上午 10:00

地点：理工楼601

报告摘要：In this talk, we consider a time domain inverse acoustic obstacle scattering problem due to passive data. Motivated by the Helmholtz--Kirchhoff identity in the frequency domain, we propose to relate the time domain measurement data in passive imaging to an approximate data set given by the subtraction of two scattered wave fields. We propose a time domain linear sampling method for the approximate data set and show how to tackle the measurement data in passive imaging. An imaging functional is built based on the linear sampling method, which reconstructs the support of the unknown scattering object using directly the time domain measurements. The functional framework is based on the Laplace transform, which relates the mapping properties of Laplace domain factorized operators to their counterparts in the time domain. Numerical examples are provided to illustrate the capability of the proposed method.

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报告人简介

刘晓莉，北京航空航天大学数学科学学院副教授，中国工业与应用数学学会第二届青年人才托举工程入选者，中国运筹学会数学与智能分会青年理事。主要从事波传播与反散射问题的数学理论及高效数值算法研究，主持国自然科学基金青年项目1项、北航前沿交叉基金项目1项，参与北航青年科学家团队项目1项，在SIAM J. on Appl. Math., SIAM J. on Imag. Sc., Inverse Problems等期刊发表论文多篇。

甘肃省计算数学基础学科研究中心

数学与统计学院

萃英学院

2026年6月23日