What does the term 'pulse duration' refer to in radar systems?

The term 'pulse duration' in radar systems specifically refers to the time the radar signal is transmitted. It defines the length of time that the radar emits a pulse of energy. Pulse duration is a critical parameter because it influences both the range resolution and the detection capabilities of the radar system.

A longer pulse duration can provide more energy, improving detection, but it can also lead to decreased range resolution since it makes it more difficult to distinguish between two closely spaced targets. Conversely, a shorter pulse can increase range resolution by allowing the radar system to differentiate between quicker successive targets.

Understanding this concept is fundamental for radar operations, as it directly affects both the performance and the capabilities of radar systems in various applications, including air traffic control, weather monitoring, and military operations.