Marine radar
Videos
Marine radars are X band or S band radars on ships, used to detect other ships and land hazards, to provide bearing and distance for collision avoidance and navigation at sea. They are electronic navi
Commercial marine radar display. Land areas are shown in yellow, and vessel tracks are displayed with green "tails" on the screen
Super high frequency
Videos
Super high frequency is the ITU designation for radio frequencies in the range between 3 and 30 gigahertz. This band of frequencies is also known as the centimetre band or centimetre wave as the wavel
A variety of parabolic antennas on a communications tower in Australia for point-to-point microwave communication links. Some have white plastic radomes over their apertures to protect against rain.
X-band (8 - 12 GHz) marine radar antenna on a ship. The rotating bar sweeps a vertical fan-shaped beam of microwaves around the water surface to the horizon, detecting nearby ships and other obstructions
Microwaves are often carried by waveguide, such as this example from an air traffic control radar, since other types of cable have large power losses at SHF frequencies.