What aspect of RADAR operation is impacted by increasing the pulse repetition rate?

Increasing the pulse repetition rate in RADAR operation enhances the temporal resolution of target detection. This improvement occurs because a higher pulse repetition rate means that the RADAR emits more pulses per unit of time, allowing it to gather more frequent updates about the positions and movements of targets. As a result, the system can detect and resolve targets that are closer together in time more accurately, leading to improved ability to distinguish between multiple targets that are near each other.

In contrast, while the other options may have relevancy in different contexts, they do not directly benefit from or are adversely affected by the increase in pulse repetition rate like temporal resolution does. For instance, signal transmission distance is primarily affected by factors such as power and antenna design rather than just the pulse repetition rate. Similarly, while power consumption may increase with a higher pulse repetition rate, it does not optimize target resolution directly. Lastly, the physical size of the equipment does not correlate with the pulse repetition rate; rather, it is determined by the design of RADAR components.