We address the problem of detecting
acoustic obstacles in a bounded domain using a
point-source reciprocity gap function.
This function is defined by taking point-sources
in the exterior domain as test functions of the
reciprocity gap functional. There is a direct relation
between the analytic extension of this function
and the double layer potential defined on the crack
which can be used for some characterization and
detection of the crack.
Copyright. All Rights Reserved.