| 释义 |
tacan|ˈtækən|
Also Tacan, TACAN.
[f. the initial letters of tactical air navigation.]
A navigational aid system for aircraft which measures bearing and distance from a ground beacon. Freq. attrib.
1955Times 17 Aug. 6/4 The Defence Department has removed security restrictions from the technical details of Tacan (tactical air navigation system) and the Air Navigation Development Board will reveal them in an announcement on August 19. 1956Electrical Communication Mar. 3/1 Tacan is a system that provides both bearing and distance information on direct-reading instruments in an airplane within 200 nautical miles of a selected ground station. Ibid. 26/1 A tacan ground-installed beacon consists of a receiver-transmitter..and either a shipboard or a shore antenna. 1966[see shoran]. 1977P. Way Super-Celeste iii. 129 A small, slim fin broke the smooth underbelly of the plane... ‘That's either a UHF antenna or a TACAN aerial,’ said Bridge. |