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题    目 :  Numerical simulation of UWB impulse radar vital sign detection at an earthquake disaster site

报 告 人刘澜波教授,University of Connecticut

时  间 2013114(周一)10:00~11:30

地  点东南大学四牌楼校区,李文正楼6楼大会议室

主  办 东南大学毫米波国家重点实验室

      IEEE AP-MTT-EMC Joint Nanjing Chapter



Using the finite difference time domain (FDTD) numerical simulation approach and synthetic computational experiments we investigated the use of the ultra-wide band (UWB) radar technique for human vital sign detection under collapsed building debris caused by catastrophic earthquakes. The model of the collapsed building was developed based on a real situation from an earthquake disaster site. The model consists of two human beings with different characteristics of vital signs, i.e., with different cardio-respiration features, posed in different positions, and buried at different depths in the debris. Analysis of the synthetic data indicates that the UWB impulse radar can identify and separate the human subjects’ vital sign for a radar record as short as 20 s. The simulation approach was verified with a physical experiment using impulse UWB radar with two human subjects positioned behind a concrete wall. Advanced signal processing of source separation and signal processing using empirical mode decomposition were conducted to identify and locate the human subjects. The results show that this approach is a promising technique for search and rescue of living victims at disaster sites.


Lanbo Liu received BS and MS in Geophysics from Peking University, and MS in Civil and Environmental Engineering, PhD in Geophysics from Stanford University. He was the Carnegie Fellow at Carnegie Institution of Washington before joining the faculty of Geology and Geophysics of the University of Connecticut. He is currently a Professor in the Department of Civil and Environmental Engineering at the University of Connecticut. He was the Summer Faculty Fellow at Schlumberger-Doll Research, and at NASA’s Goddard Space Flight Center. He is also serving as an Expert for US Army Corps of Engineers. He received the US Army R&D Achievement Award for his work on radio wave propagation in complex terrains. He was a Fulbright Scholar to Norway in 2009–2010. He has more than 100 publications in peer-referred journals, conference proceedings, and technical reports. He served as an Associate Editor for Geophysics and is serving as the Associate Editor for Journal of Environmental and Engineering Geophysics. His current research focuses on numerical modeling and imaging with electromagnetic, acoustic, and seismic waves for exploration, military, geotechnical, environmental, and biomedical engineering applications

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