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SUMMARY:Sampling methods for time domain inverse scattering problems - Lec
 hleiter\, A (cole Polytechnique)
DTSTART:20110804T110000Z
DTEND:20110804T114500Z
UID:TALK32225@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We consider inverse scattering problems for the wave equation 
 in the time domain: find the shape of a Dirichlet scattering object from t
 ime domain measurements of scattered waves. For this time domain inverse p
 roblem\, we introduce sampling methods\, a well-known family of techniques
  for corresponding frequency domain inverse scattering problems. \n\nThe p
 roblem setting and the time domain algorithm incorporate two basic feature
 s: The data consists of measurement of causal waves\, and the inversion al
 gorithm directly works on the time domain data without using a Fourier tra
 nsformation. \n\nTime-domain sampling methods naturally incorporate a cont
 inuum of frequencies in the inversion algorithm. Consequently\, they induc
 e the potential to improve the reconstruction quality when compared to met
 hods working at one single frequency.\n
LOCATION:Seminar Room 1\, Newton Institute
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