The degree of accuracy to which RADAR can measure azimuth is defined as which term?

The degree of accuracy to which radar can measure azimuth is termed azimuth resolution. Azimuth resolution refers to the ability of a radar system to distinguish between two targets that are located at the same range but at slightly different horizontal angles. This capability is crucial for effectively tracking multiple objects within close proximity and ensuring precise targeting.

Azimuth resolution is typically influenced by factors such as radar wavelength and antenna design. A radar system with higher azimuth resolution can produce finer details in the angular measurement, which is essential in various applications, including surveillance, tracking, and navigation.

Other terms in the choices refer to different concepts in radar and electronic warfare. Elevation resolution relates to measurements in the vertical plane, while azimuth definition and elevation definition are not standard terms commonly used to describe the measuring capabilities of radar systems. Thus, azimuth resolution is the correct choice as it directly describes the radar's ability to accurately discern targets by their horizontal angle.