What does the acronym RADAR stand for?

The acronym RADAR stands for "Radio Detection And Ranging." This term describes the technology used to determine the distance and speed of objects, such as vehicles, by sending out radio waves and analyzing the waves that return after bouncing off the object. The use of "radio" indicates that the system operates on radio wave frequencies, while "detection" refers to the system's ability to identify objects, and "ranging" pertains to the measurement of distance. This fundamental concept underpins radar technology's application in various fields, including aviation, meteorology, and traffic enforcement, making it a critical element in speed detection operations. The other options listed do not accurately represent the correct terminology or do not capture the primary functions of radar technology properly.