Which component of the antenna system measures azimuth?

The component of the antenna system that measures azimuth is the Azimuth Drive Assembly. This assembly is specifically designed to control the horizontal rotation of the antenna, allowing it to point in different azimuth angles. Azimuth refers to the compass direction from which the signal is coming or to which the antenna is aimed, measured in degrees.

The Azimuth Drive Assembly is responsible for precisely rotating the antenna around its vertical axis, enabling it to track targets or cover a wider area as needed. This is critical for radar operations, ensuring that the system can effectively detect and track objects over various angles in the horizontal plane.

While the other options are important components of an antenna system, they serve different functions. For example, the Antenna Reflector Assembly focuses on directing the radar signals but does not measure or control azimuth. The Tilt Drive Assembly deals with elevation adjustments, adjusting the antenna's angle vertically rather than horizontally. The Motor Controller Card plays a role in controlling the motors of the system, but it does not specifically measure azimuth itself. Therefore, the Azimuth Drive Assembly is the correct component for this function.