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A reverse-time migration algorithm expressed
as the conjugate of forward time-extrapolation modeling is presented
for both 1-D and 2-D geometries.
The conjugate operator is obtained by formulating
the forward operator explicitly and transposing the forward operator.
The algorithm is tested by a numerical experiment for a 1-D layered model.
A method to suppress artifacts, which are caused
by the intrinsic non-unitary property of the operator,
is introduced using a least-squares optimization technique.

Stanford Exploration Project

11/17/1997