Doppler processing is a technique used in radar and communication systems to analyze the frequency changes of signals caused by the relative motion between a source and a receiver. When an object moves towards the receiver, the frequency of the signal increases, while it decreases if the object moves away. This effect is known as the Doppler effect. By measuring these frequency shifts, Doppler processing can determine the speed and direction of moving objects, such as vehicles or weather patterns. This information is crucial for applications like weather radar, air traffic control, and satellite communications, enhancing safety and efficiency in various fields.