What kind of information does the RHI provide?

The RHI, or Range Height Indicator, provides information related to the range and altitude of targets in radar systems. It presents data on how far an object is from the radar (range) and its vertical position in the atmosphere (height or altitude). This is essential for tracking various phenomena, such as weather patterns or aircraft, as it allows operators to visualize the three-dimensional structure of targets over a specific range.

In contrast, the other options do not align with the primary purpose of the RHI. Speed and direction pertain more to motion characteristics rather than position, weather forecasting typically involves broader data analysis beyond altitude and range, and communication ranges refer to the distances over which signals can be transmitted, which is unrelated to the RHI's functionality.