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To develop true-amplitude formulas for the CSP case, we shall use the
simple fact that if is the amplitude of the discontinuity
received as a result of wave-field continuation with the amplitude-equivalent
operator with the kernel
and if the kernel of the operator is
then as a result of applying the operator we receive the
amplitude
| |
(117) |

(note that the star means that *r*^{*} belongs to the same
ray
of eiconal as **r**).
But the operator acts inversely (in the sense of
q-equivalence). This means that at the point on the reflector,

where means the point before the reflection.
According to equation (117),

Now we apply the condition
and receive
So the kernel we are looking for is
or in homogeneous media^{}
For land surveys, in the general case we have
and in homogeneous media

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Stanford Exploration Project

1/13/1998