The remote vehicle market is currently exploding.  Every company in the
news today has some interest or activity in UAV's - not to mention the
consumer devices flying off the shelves in the millions and the new options of
ground and water vehicles which are following close behind them.  But as the
number of vehicles grows exponentially, the challenges of managing safe and
responsible usage in an environment that is seeing increasing regulation are
mounting.  But to regulate or manage these vehicles - you must first know
where they are operating.  Currently Radar and IFF are used to detect manned aerial vehicles.  Neither operate well with medium to small UAVs and not at all with other vehicle types.