Which radar characteristic pertains to the ability to detect weak signals amid strong noise?

The ability to detect weak signals amid strong noise is referred to as sensitivity in radar systems. Sensitivity defines how effectively a radar can pick up the reflected signals from an object or target, particularly when there is a high level of background noise that may obscure these signals. A radar system with high sensitivity can differentiate between a weak return signal and the surrounding noise, making it capable of detecting smaller or more distant objects.

When evaluating radar systems, sensitivity is critical in ensuring that important signals are not drowned out by ambient noise. For instance, in maritime navigation, detecting the presence of small vessels or obstacles in poor weather conditions relies heavily on the radar's ability to maintain sensitivity in challenging environments.

In contrast, resolution refers to the radar system's ability to distinguish between two closely spaced targets, clarity is more related to the overall quality of the displayed radar image, and accuracy pertains to how closely the radar's measurements reflect the actual positions and distances of targets. These attributes, while important for overall radar performance, do not specifically address the challenge of detecting weak signals in a noisy background.