Which component is identified as the discriminator in a typical RADAR receiver diagram?

The discriminator in a typical RADAR receiver plays a crucial role in demodulating the received signal. It is responsible for converting frequency variations in the incoming signal into amplitude variations that can be further processed. In frequency-modulated RADAR systems, the information is encoded in the frequency changes of the received signal. The discriminator detects these variations and translates them into a usable form.

This means that the discriminator provides a means to interpret the phase or frequency modulation of the signal, allowing the system to extract valuable data from the incoming RADAR signals. Its design is tailored for this specific function, making it a vital component in the overall signal processing chain. Other components, while essential in their respective roles—like amplifying signals or performing automatic frequency control—do not fulfill the specific function of the discriminator.