American Institute of Mathematical Sciences

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February  2008, 2(1): 63-81. doi: 10.3934/ipi.2008.2.63

Iterative time-reversal control for inverse problems

Kenrick Bingham 1, , Yaroslav Kurylev 2, , Matti Lassas 1, and  Samuli Siltanen 3,

1. 

Helsinki University of Technology, Institute of Mathematics, P.O.Box 1100, 02015 TKK, Finland, Finland
2. 

University College London, Department of Mathematics, Gower Street, London, WC1E 6BT, United Kingdom
3. 

Tampere University of Technology,Institute of Mathematics,, P.O. Box 553, 33101 Tampere, Finland

Received  April 2007 Revised  June 2007 Published  January 2008

A novel method to solve inverse problems for the wave equation is introduced. The method is a combination of the boundary control method and an iterative time reversal scheme, leading to adaptive imaging of coefficient functions of the wave equation using focusing waves in unknown medium. The approach is computationally effective since the iteration lets the medium do most of the processing of the data.
    The iterative time reversal scheme also gives an algorithm for approximating a given wave in a subset of the domain without knowing the coefficients of the wave equation.
Keywords: Inverse problems, wave equation, control, time reversal..
Mathematics Subject Classification: Primary: 35R30, 93B0.
Citation: Kenrick Bingham, Yaroslav Kurylev, Matti Lassas, Samuli Siltanen. Iterative time-reversal control for inverse problems. Inverse Problems and Imaging, 2008, 2 (1) : 63-81. doi: 10.3934/ipi.2008.2.63
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