What term describes the ability to receive weak signals and amplify them to a usable level?

The term that describes the ability to receive weak signals and amplify them to a usable level is sensitivity. Sensitivity refers to the minimum signal strength that a receiver can detect and process effectively. High sensitivity in a receiver allows it to pick up and amplify weak signals, making them intelligible and usable in various applications like communication systems, radio receivers, and other electronic devices.

In the context of signal processing, having a high sensitivity means that the device can perform well in challenging environments where signals may be faint or subject to interference. This capability is crucial for ensuring clear communication, especially in aviation and naval operations, where reliable signal reception can be essential for safety and operational effectiveness.