  When the direct view between the target and the observer is not available,
due to obstacles with non-zero sizes, the observation is received after
reflection from a reflector, this is the indirect view or Non-Line-Of Sight
condition. Localization of a target in NLOS condition still one of the open
problems yet. In this paper, we address this problem by localizing the
reflector and the target simultaneously using a single stationary receiver, and
a determined number of beacons, in which their placements are also analyzed in
an unknown map. The work is done in mirror space, when the receiver is a
camera, and the reflector is a planar mirror. Furthermore, the distance from
the observer to the target is estimated by size constancy concept, and the
angle of coming signal is the same as the orientation of the camera, with
respect to a global frame. The results show the validation of the proposed work
and the simulation results are matched with the theoretical results.
