Doppler radars work by transmitting a beam of electromagnetic waves toward a target and then receiving the waves that are reflected back. By measuring the change in frequency of the returned signal relative to the transmitted signal, the radar can determine the speed of the target relative to the radar. This change in frequency, known as Doppler Shift, provides information about whether the target is moving toward or away from the radar and at what speed.
The Doppler effect for radar involves the changing frequency of radar waves as they reflect off a moving object. As the object moves toward the radar, the frequency of the reflected waves increases; As the object moves away, the frequency decreases. By analyzing this frequency shift, the radar system can calculate the speed of the object, allowing precise tracking and measurement of its movement.
Pulse doppler radars work by emitting short bursts or pulses of radio waves, then listening for echoes of these pulses reflected from objects. By synchronizing the delay between when a pulse is sent and when its echo is received, the radar can determine the distance to the object. Additionally, by analyzing the Doppler shift in the frequency of the returned pulses, the radar can measure the speed of the object. This combination of range and speed makes pulse Doppler radars particularly useful for detecting and tracking moving targets.