The ability of RADAR to separate two targets close in azimuth at approximately the same range is defined as which term?

The correct term for the ability of radar to separately identify two targets that are close in angle (azimuth) and at a similar range is known as azimuth resolution. Azimuth resolution refers to the capability of the radar system to distinguish between two closely spaced targets in the horizontal plane by distinguishing their angular locations. This is crucial for accurately tracking and identifying multiple targets, especially in scenarios where they are in close proximity to each other.

The measurement of azimuth resolution is fundamentally linked to the radar's frequency and the size of its antenna. A higher frequency or a larger antenna tends to improve azimuth resolution, allowing the radar to detect even slight differences in angle between targets.

Understanding azimuth resolution is particularly relevant in electronic warfare and radar applications, where the ability to discern between multiple threats or targets can be critical for effective operational decision-making.