[Radar system]

A radar is an electromagnetic sensor that is used to detect and locate an object

Radio waves or microwaves are radiated out from the radar into free space. Some of these waves are intercepted by reflecting objects.

These intercepted radio waves hit the target and are reflected in many different directions. Some of these waves can be directed back toward the radar, where they are received and amplified.

If these waves are received again at their origin, then it means an object is in the propagation direction.

The modern radar system is very advanced and used in highly diverse applications such as Air traffic control, Air-defence system, radar Astronomy, Antimissile system, Outer space Surveillance system, and many more.