Azimuth resolution means...

• A. Ability to tell two targets apart in range at same azimuth
• B. Ability to tell two targets apart close in azimuth at same range
• C. Ability to measure elevation
• D. Ability to track speed

Answer: (B)

Azimuth resolution is about distinguishing targets that are separated in the horizontal angle around the radar—that is, left-right directions—while they share the same range. If two objects sit at the same distance but at slightly different azimuth angles, a radar with a narrow beamwidth can produce two distinct returns; a wide beamwidth will tend to merge them into one.

This is governed by the antenna’s beamwidth (roughly set by the wavelength and the antenna aperture). A larger or more sophisticated aperture (or synthetic aperture processing) yields a narrower beam, improving the ability to tell targets apart by azimuth. In contrast, range resolution would be about distinguishing objects at different distances, elevation resolution concerns vertical angle, and Doppler-related concepts address relative speed.

So the statement that describes azimuth resolution is the ability to tell two targets apart when they are close in azimuth but at the same range.