| Commercial and military aircrafts are often required to land in
limited visibility conditions. Imaging at mm-wavelengths gives an
image on landing that a pilot can use to guide the aircraft.
picture on the left shows the view of the pilot showing the foggy conditions (the blue image)
and a millimetre wave image (the green image) which can penetrate through the fog.
This enables the pilot to land safely even though the runway could
only be seen a few metres before landing.