What function does phase coding serve in modern RADAR systems?

Phase coding in modern RADAR systems serves to enhance target resolution and reduce ambiguity. By encoding information in the phase of the transmitted pulse, RADAR can more precisely differentiate between closely spaced targets. This technique is beneficial in scenarios where multiple targets might be present in proximity or moving at similar speeds, as it enables the system to distinguish between them more effectively.

Additionally, phase coding can improve the ability to identify target features and characteristics, leading to better measurements and tracking of targets over time. By providing a means to encode data that does not rely solely on the pulse length or power, phase coding allows for much finer resolution, which is essential in modern applications where accuracy and detail in target identification are crucial.