The civil aviation radar (surveillance) architecture

Surveillance applications are broadly divided into "broadcast" or "addressed" services. Each service requires its own logical network to make optimal use of bandwidth. Three main data management processes, datalink server, surveillance processing and track processing, utilise the data obtained from sensors and re-circulate the information, to augment the raw data. End applications receive the data from the main processes over LAN for distribution to controller workstations. Controllers receive and request data from ground and airborne applications.