Question

The Sum port is the main beam of the antenna; the center of this main radar beam is known as the ________?

1) Focus point
2) Central lobe
3) Side lobe
4) Null point

Answer 1

The center of the main radar beam, where the maximum signal strength and the best resolution occur, is known as the Central lobe.

Step-by-step explanation:

The center of the main radar beam in an antenna system is known as the focus point. In the context of radar systems, the term refers to the point where radio waves, transmitted from the radar, are focused to determine the distance and motion of a target object or to form images of it. This is analogous to the focal point in optical systems, which is the location where converging light rays cross. In the case of antennae for radar applications, the focus point is the region where the maximum signal strength and the best resolution can be achieved, which corresponds to the central core of the antenna beam known as the Central lobe.