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12:00 - 13:00 21 March 2012

Time Reversed Absorbing Condition (TRAC): Recreate the past & applications to inverse problems


Room 1.19 Malet Place Engineering Building. |

Open to: Academic | Student

Speaker information: Marie Kray, Laboratoire Jacques-Louis LIONS, Paris. Host: CMIC Seminar. Abstract: We introduce time reversed absorbing conditions (TRAC) in time reversal methods. They enable one to "recreate the past" without knowing the source which has emitted the signals that are back-propagated. Two applications in inverse problems are presented. The method does not rely on any a priori knowledge of the physical properties of the inclusion. Numerical tests with the wave equation illustrate the efficiency of the method. This technique is fairly insensitive with respect to noise in the data.


Dominique Drai
+ 44 (0) 20 7679 0320 | cmic@ucl.ac.uk