The degree of accuracy which RADAR can measure elevation is defined as which of the following terms?

The correct answer highlights the concept of measuring the accuracy of radar in determining the elevation angle of a target. This concept is essential in understanding how radar systems operate, especially in applications where altitude plays a critical role, such as air traffic control, military operations, and meteorological observations.

When referring to "Elevation Definition," it typically describes the specific metric or framework for measuring how well a radar system can discern an object's height or vertical position in space relative to a reference point. This term reflects the inherent capability of the radar system to accurately interpret signals to ascertain elevation changes, which is crucial for targeting, tracking, and collision avoidance.

In contrast, terms such as azimuth definition and azimuth resolution relate to the horizontal measurement capabilities of a radar system. They deal with how accurately the radar can measure the angle around a vertical axis and do not pertain directly to elevation accuracy. Therefore, "Elevation Definition" is the most relevant term concerning measuring elevation accuracy in radar systems.