Radar Transponder

A radar transponder, also known as a radar beacon, is a device used in aviation and maritime applications to enhance the visibility of an object on radar screens. It is essentially a radio transmitter and receiver that responds to radar signals by transmitting a specific reply signal.

When a radar transponder receives a radar signal, it automatically sends out a reply signal that includes information such as the object's identity, position, and altitude. This allows the radar operator to easily identify and track the object, even in situations where the object may not have a strong radar reflection.

Radar transponders are commonly used in aircraft, where they are known as transponders or Mode S transponders. They are required equipment in most controlled airspace and are used to enhance air traffic control and collision avoidance systems. In maritime applications, radar transponders are often referred to as radar beacons or radar reflectors, and they are used to improve the visibility of small boats and other vessels on radar screens.

Overall, radar transponders play a crucial role in improving safety and situational awareness in aviation and maritime environments by making objects more easily detectable and identifiable on radar systems.