What is the function of a receiver in a RADAR system?

A receiver in a RADAR system plays a crucial role in the detection and analysis of targets. Its primary function is to capture the reflected signals that bounce back from objects after the system emits radar pulses. When the transmitter sends out these pulses, they travel through the atmosphere and interact with various surfaces, such as aircraft, ships, or terrain. The receiver is sensitive to these reflected signals and converts them into an electrical signal that can be processed and analyzed to determine the distance, speed, and characteristics of the detected objects.

Thus, it is evident that the receiver's ability to capture these echoes is fundamental to the operation of RADAR. It enables the interpretation of the data and facilitates real-time tracking and surveillance. The other options suggest functions that either do not belong to the receiver, such as emitting radar pulses or calibrating the radar beam, or are outside the scope of the receiver's direct responsibilities, like analyzing atmospheric conditions.