What type of scan has the RADAR antenna without any scanning motion?

The type of scan where the RADAR antenna does not have any scanning motion is referred to as a steady scan. In this scenario, the antenna remains fixed in one position, continuously emitting and receiving signals in the same direction without moving to scan a wider area. This approach is often used for tracking a specific target or maintaining a lock on a particular signal, as it allows for a detailed analysis of that target’s characteristics without the distraction of movement.

In contrast, other scanning methods involve the antenna physically moving to cover a broader area or to follow a target, which could lead to variations in the data received. For example, circular scans involve the antenna moving in a circular pattern to gather information from all directions, while raster scans methodically cover a rectangular area by sweeping back and forth. Bi-directional scanning refers to scanning in two directions, which also requires some form of movement from the antenna. Steady scanning, therefore, is specifically characterized by its lack of motion, allowing for focused and stable information gathering.