Direct Recovery Methods in the Stratified Ocean Waveguide

主讲人：刘可伋上海财经大学研究员

时间：2019年10月17日14：00

地点：徐汇校区3号楼301

举办单位：数理学院

主讲人介绍：刘可伋，上海财经大学研究员，毕业于香港中文大学，主要从事反问题及金融数学研究。在SIAM J. Scientific Computing, SIAM J. Numerical Analysis, SIAM J. Imaging Sciences, J. Computational Physics, Inverse Problems等国际著名期刊发表论文近20篇；入选上海市晨光学者计划，浦江人才计划，科技启明星计划。

内容介绍：In this work, we shall show the uniqueness of direct and inverse problems, and several direct methods would be introduced as well. The direct recovery approaches only apply the matrix-vector operations to estimate the inhomogeneous media from the received partial data. In practice, these methods are capable of reconstructing the objects of different shapes and locations, robust against noise, computationally fairly cheap and easy to carry out. We can consider them as simple and direct algorithms to supply satisfactory initial locations for the application of any existing more refined and precise but computationally more demanding techniques to achieve accurate reconstructions of physical features of scatterers.