  Unmanned Aerial Vehicles grow more popular by the day and applications for
them are crossing boundaries of science and industry, with everything from
aerial photography to package delivery to disaster management benefiting from
the technology. But before they become commonplace, there are challenges to be
solved to make them reliable and safe.
  The following paper discusses the challenges associated with the precision
landing of an Unmanned Aerial Vehicle, including methods for sensing and
control and their merits and shortcomings for various applications.
