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學(xué)術(shù)動(dòng)態(tài)

楊家青:Inverse obstacle scattering in a two-layered medium
2021年11月22日 | 點(diǎn)擊次數(shù):

報(bào)告承辦單位: 數(shù)學(xué)與統(tǒng)計(jì)學(xué)院

報(bào)告題目:Inverse obstacle scattering in a two-layered medium

報(bào)告內(nèi)容In this talk, I will report our recent works on inverse acoustic scattering of recovering an embedded obstacle in an unknown two-layered medium separated by a locally rough interface. A global uniqueness theorem is first provided for uniquely determining the interface and the obstacle with its surrounding medium by taking partial measurements in upper-half space. Then, the inversion algorithm based on the LSM is presented to image the local perturbation of the interface and embedded obstacles. Finally, several numerical examples are carried out to illustrate the effectiveness of the reduced algorithms.

報(bào)告人姓名:  楊家青

報(bào)告人所在單位: 西安交通大學(xué)數(shù)學(xué)與統(tǒng)計(jì)學(xué)院

報(bào)告人職稱/職務(wù)及學(xué)術(shù)頭銜:    教授

報(bào)告時(shí)間:  202111月26日 15:20-16:00

報(bào)告方式: 騰訊會(huì)議ID: 838 2530 8952

報(bào)告人簡介:  楊家青教授2012年獲中國科學(xué)院數(shù)學(xué)與系統(tǒng)科學(xué)研究院博士學(xué)位,2012-2014年在中國科學(xué)院數(shù)學(xué)與系統(tǒng)科學(xué)研究院做博士后,2014-2015年在香港中文大學(xué)做Research Fellow,2015年入職于西安交通大學(xué)。研究興趣為反問題的數(shù)學(xué)理論與計(jì)算方法。先后主持國家自然科學(xué)基金項(xiàng)目2項(xiàng),在SIAM系列、IP等發(fā)表論文20余篇。