  The Inverse problem for an electromagnetic field produced by a dipole is
solved. It is assumed that the field of an arbitrary changing dipole is known.
Obtained formulae allow calculation of the position and dynamics of the dipole
which produces the measured field. The derived results can be used in
investigations on radiative process in solids caused by changing of the charge
distribution. For example, generation of the electromagnetic field caused by
oscillations of atoms or electron gas at the trace of a particle channeling in
a crystal, or fields arising at solids cracking or dislocation formation -- in
any case when one is interested in the details of the dipole field source.
