Radar technology works on the principle of reflection of radio waves. A radar system consists of a transmitter that emits radio waves, a receiver that detects the reflected waves, and a processor that analyzes the data to provide information about the target. The time taken for the radio waves to travel to the target and back is used to calculate the range, while the slight changes in frequency of the reflected waves provide information about the target’s speed and direction. Radar can be used for a variety of applications, including air traffic control, weather forecasting, and military surveillance.