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The expression for the kinematic and amplitudes of AMO
[equations ((2) and (3))]
are valid for *z*_{1} and *z*_{2} ranging between
-1 and 1.
However, for finite propagation
velocities,
the AMO operator has much narrower aperture.
Taking into account this finite aperture is
crucial both for accuracy and for efficiency.
For a given minimum propagation velocity *V*_{min},
the maximum output time can be evaluated
according to the following
expressions, as derived in Fomel and Biondi (1995a):

| |
(6) |

| (7) |

| |
(8) |

To avoid truncation artifacts, we use a tapering
function at the edges of the operator aperture.

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Stanford Exploration Project

11/12/1997