Radar systems use radio waves to detect and track targets. They are divided into two categories – air-to-air and ground-based. Air-to-air radar systems are used for detecting and tracking aircraft, while ground-based radar is used for the detection of objects on the ground, such as people or vehicles.
Some key components of a radar system include an antenna, a transmitter/receiver unit, processing circuitry, memory storage devices (usually a hard drive), software (typically in an embedded form on the equipment), target acquisition units (TAAUs), display screens/units and data links to other remote stations or national control centers.