Which feature of RADAR affects its maximum detection range?

The maximum detection range of RADAR is influenced by multiple factors, and both the receiver noise figure and the pulse repetition frequency (PRF) play significant roles in this context.

The receiver noise figure is critical because it represents the noise performance of the RADAR receiver. A lower noise figure indicates a better ability to detect weak signals, which directly correlates to an extended detection range. If the noise figure is too high, the receiver will struggle to differentiate between the signal and background noise, thus limiting the effective range at which targets can be detected.

The pulse repetition frequency also impacts the maximum detection range. PRF determines how often the RADAR transmits pulses, and it affects the ability to detect targets at varying distances. A higher PRF can allow for a greater update rate and improved tracking of faster targets, but it also limits the maximum range because targets must return before the next pulse is sent. Conversely, a lower PRF allows for longer distances to be covered but may reduce the update rate.

Both factors combined govern how effectively a RADAR system can detect and track objects at varying distances, making their interplay vital in maximizing performance. This understanding is fundamental in RADAR system design and operation, as balancing these parameters optimizes detection capabilities.