| 释义 |
digital navigation system digital navigation system[′dij·əd·əl ‚nav·ə′gā·shən ‚sis·təm] (navigation) An electronic digital device which provides an aircraft, spacecraft, or surface vehicle with frequently updated positional information in two or three dimensions in relation to some reference source and translates this information into a form usable either by human operators or directly by vehicle control systems. |