What radar technique involves the use of a swinging or scanning antenna?

The technique that involves the use of a swinging or scanning antenna is known as scanning. This method allows the radar system to cover a broad area by moving the antenna back and forth or rotating it, enabling it to detect and track multiple objects over a wide field. Scanning is particularly effective in situations where the radar needs to monitor a large space, such as along roadways or in congested traffic areas. This technique enhances the radar's ability to identify the speed and position of various vehicles without the need to have each vehicle in direct line of sight for an extended period.

Tracking, while also an important radar function, refers more to the capability of maintaining a continuous assessment of an object's speed and location rather than the movement of the antenna itself. Panning specifically mentions a lateral movement that is less common in radar terminology and may imply limited control, while pointing generally refers to directing the radar antenna at a fixed target rather than scanning an area.