Also known as air traffic control radar beacon system (atcrbs: air traffic control radar beacon system). It was originally in the air in order to distinguish the two sides of the radar aircraft and the development of IFF systems, when the basic principle of this system through the development, and components for civil aviation air traffic control, you become a secondary radar system .
Controllers from the secondary radar is very easy to know the number of aircraft, altitude, direction and other parameters, so that the radar into the air by a monitoring tool for the control means, the emergence of secondary radar air traffic control is the most significant technological advances, two sub-radar and a radar to work with its main radar antenna mounted on a top, and a radar synchronous rotation.
Secondary radar pulse is emitted in pairs, its frequency is 1030mhz, each of the time interval between pulses is fixed, this interval determines the SSR model. Civil Aviation is currently used in two modes, an interval of 8 ms, as a model; another interval of 21 ms, called the c mode. |
