What refers to the motion of the antenna axis (of the beam) as the radar looks for an aircraft?

What refers to the motion of the antenna axis (of the beam) as the radar looks for an aircraft?

• A. Polarization
• B. Monopulse scan
• C. Scanning Method
• D. Refraction

Answer: (C)

The motion of the antenna axis as the radar searches for an aircraft is described by the scanning method. Scanning refers to sweeping or rotating the radar beam across the search volume so the radar can look in different directions and detect targets. This can be done by physically moving the antenna (mechanical scanning) or by electronically steering the beam in a phased array (electronic scanning). Polarization is about the orientation of the transmitted electric field, not the beam’s motion. Monopulse scan is a technique used to determine bearing by comparing multiple simultaneous beams, but it’s not the general motion of scanning. Refraction is the bending of radar waves by the atmosphere, not the beam’s motion.

The motion of the antenna axis as the radar searches for an aircraft is described by the scanning method. Scanning refers to sweeping or rotating the radar beam across the search volume so the radar can look in different directions and detect targets. This can be done by physically moving the antenna (mechanical scanning) or by electronically steering the beam in a phased array (electronic scanning).

Polarization is about the orientation of the transmitted electric field, not the beam’s motion. Monopulse scan is a technique used to determine bearing by comparing multiple simultaneous beams, but it’s not the general motion of scanning. Refraction is the bending of radar waves by the atmosphere, not the beam’s motion.