Redatuming via an iterative primal-dual TRAC approach

In inverse problems, redatuming data consists in virtually moving the sensors from the original acquisition location to an arbitrary position. This is an essential tool for target oriented inversion. This paper presents an exact redatuming method based on the Time Reversal Absorbing Conditions (TRAC) approach. Unlike conventional methods, our approach is built on a convergent iterative process instead of a least-squares formulation. Numerical results and comparisons with other approaches illustrate the efficiency and convergence of our method applied to the stationary Helmholtz equation.