What is the short term for Radio Detection and Ranging?

The short term for Radio Detection and Ranging is "RADAR." This term effectively captures the essence of the technology, which is primarily used for detecting objects and measuring their distance by sending out radio waves. When these waves hit an object, they reflect back to the source, enabling the determination of the object's location and speed. The acronym RADAR itself is derived from its full form and is widely recognized in both civilian and military applications, such as aviation, meteorology, and maritime navigation.

The other choices do not represent the complete concept encapsulated by RADAR. While "RADIO," "RANGE," and "DETECTION" relate to components of the technology or its functions, none alone convey the full meaning or context that RADAR does as an integrated system for detection and range measurement.