| 释义 |
▪ I. racon orig. U.S.|ˈreɪkɒn|
[f. radar + beacon n.]
= radar beacon s.v. radar2.
1945Army & Navy Jrnl. 18 Aug. 1534/4 Racon, radar beacons. Stations which serve as the radar equivalents of lighthouses. 1947L. A. Turner in L. N. Ridenour Radar System Engin. viii. 246 Beacons of the synchronous sort just described have been variously called ‘radar beacons’, ‘responder beacons’, ‘racons’, and ‘transponders’. 1958Proc. Inst. Electr. Engineers CV. b. Suppl. No. 8. 351/1 A racon has recently been developed at the Admiralty Signals and Radar Establishment for use on lightvessels, the intention..being that a number of such racons shall be fitted around the shores of Great Britain on both lightvessels and lighthouses. 1967B. Knox Blacklight vii. 142 ‘The screen was registerin' one o' those blacklight beacons.’.. ‘The deep-water racon,’ nodded Carrick. 1977Globe & Mail (Toronto) 24 Feb. b16 Lakes shipping..can also obtain guidance from racons (shore-based radar reflectors).
▪ II. racon
obs. f. rackan. |