  The interaction of hot atoms with laser fields experiences a Doppler shift
which can severely affect the precise spatial measurement of an atom. We
suggest an experimentally realizable scheme to address this issue in
three-dimension position measurement of a single atom in vapors of rubidium
atoms. Three-level lambda type atom-field configuration is considered where a
moving atom interacts with three orthogonal standing-wave laser fields and
spatial information of the atom in 3D space is obtained via upper-level
population using a weak probe laser field. The atom moves with a velocity along
the probe laser field and due to the Doppler broadening the precision in the
spatial information deteriorates significantly. It is reported that via a
microwave field the precision in the position measurement of the single atom
can be obtained in the hot rubidium atom overcoming the limitation posed by the
Doppler shift.
