Which of the following describes the radar 'beam width'?

The description of radar 'beam width' refers to the area over which the radar signal spreads. Beam width is a crucial factor in radar technology, as it defines how focused or dispersed the radar signal is as it travels. A narrower beam width indicates a more concentrated signal which can provide better accuracy in detecting objects at a distance, whereas a wider beam width may encompass a broader area but might result in less precision due to multiple reflections or interference from various objects in that area.

Understanding beam width is essential for interpreting radar readings effectively. For instance, police officers utilizing radar for speed detection benefit from a narrower beam width that allows them to target specific vehicles with minimal interference from adjacent traffic. This helps in accurately measuring a vehicle's speed without being affected by those nearby. Consequently, recognizing the significance of beam width is fundamental for anyone in the field of radar/lidar speed detection.