What is bearing resolution primarily concerned with?

Bearing resolution is primarily concerned with the ability of a radar system or other detecting technology to differentiate between two adjacent targets that are at the same distance. This capability is critical in various applications, such as radar and sonar systems, where it is essential to identify and differentiate between multiple objects that may appear close to each other in the same direction.

When two targets are at equal distances from the sensor, they can potentially produce similar returns, making it challenging for the system to process and display each target distinctly. High bearing resolution allows operators to distinguish between these closely spaced targets, improving tracking and situational awareness. This capability is fundamental to ensuring effective monitoring in environments like air traffic control, maritime navigation, and military operations.

The other options focus on distinguishing targets based on different distances, elevations, or sizes, which are related to other aspects of target detection and resolution but do not specifically address the core concept of bearing resolution.