 Dr. Jie Li, Shanghai Jiaotong University
Personal profile: Jie Li, Associate Researcher of Shanghai Jiaotong University. Her research interests include acoustic scattering from underwater targets and geoacoustic inversion of ocean ambient noise. She has published several papers in acoustic journals, such as Acta Acustica and JASA. Her research has been selected as JASA Technical Area Picks, JASA Most Downloaded Papers, JASA Cover Highlight Papers, and “Best Paper Award” at the ASA Conference.
She has been supported by the NSFC general program, the 4th “Young Elite Scientists Sponsorship Program” by CAST, and the “Chenguang Program” of Shanghai Municipal Education Commission and Shanghai Education Development Foundation.
Presentation title: Acoustic scattering characteristics of divers and Unmanned Underwater Vehicles
Abstract: The underwater detection and tracking of small targets, such as divers and Unmanned Underwater Vehicles (UUVs), are closely related to marine environmental protection and the development of marine resources. This talk introduces the theoretical and experimental research conducted by the Underwater Acoustic Engineering Lab of Shanghai Jiao Tong University on the acoustic scattering characteristics of divers and UUVs. Firstly, a three-dimensional fine geometric model of a diver and a UUV is established, and a plate element method for calculating the target echo characteristics of different material combinations, considering occlusion, is proposed to forecast the target's broadband and omnidirectional echo characteristics. Secondly, on-lake tests for measuring the target strength of divers and UUVs are carried out, and the static and dynamic acoustic scattering characteristics of the targets are obtained to validate the accuracy of the theoretical model. |