A typical surface radar set is made up of five components.
Description of Function
Sends out electromagnetic waves of energy.
Allows waves to be omitted as pulses.
Beams the energy at the targets and rotates to scan
the surrounding area.
Converts the reflected radio energy returned from the
target into usable data.
Presents the data received visually on a scope.
The following stages help to explain how radar operates:
The PPI scope provides a birds-eye view of the area covered by the
radar with your ship in the center. The sweep appears as a bright line
and originates in the center of the scope and extends to the outside edge.
This straight line sweep is synchronized with the radar antenna and
rotates 360°. Each time a target is detected, it appears as an intensified
spot on the scope. See figure 8-31.