| 单词 | radio beacon |
| 释义 | > as lemmasradio beacon d. A radio transmitter enabling pilots to fix their position or the aerodrome staff to locate, identify, or guide aircraft; also marker beacon, radio beacon, and attributive. ΘΚΠ society > travel > air or space travel > action of flying (in) aircraft > navigation of course of aircraft > [noun] > radio beam or beacon beacon1919 localizer1922 beam1927 landing beam1929 marker beacon1929 fan marker1948 1919 Pop. Sci. Monthly Oct. 49/2 What is a radio beacon? 1922 Nature 20 May 650/1 Until two or three years ago the radiophares—or radio-beacons as they are called in America—were purely stations for giving ships their positions. 1929 Techn. News Bull., Bureau of Standards Nov. 108 The Bureau has found it necessary to give..attention to marker beacons, for two purposes. One is the adaptation of the marker beacon principle for use..on the airways in connection with the visual beacon system. Another is the provision of marker beacons as auxiliaries..with fog-landing equipment. 1932 F. E. Terman Radio Engin. xvi. 593 The instant when the received beacon signal goes through zero. 1937 Jrnl. Royal Aeronaut. Soc. 41 591 An analysis of the flight of an aeroplane, when directed by means of a radio beacon. 1962 Times 21 Feb. 10/2 Direct communication with the capsule was briefly lost as it reentered the atmosphere because of an ionization process, but beacon signals were received. radio beacon radio beacon n. = beacon n. 6d. ΚΠ 1919 Pop. Sci. Monthly Oct. 49/2 What is a radio beacon? 1966 D. Francis Flying Finish ii. 27 I flew contentedly along..checking my direction by the radio beacons over which I passed. 1992 Equinox Aug. 55/2 An Emergency Position Indicating Radio Beacon..is required on all Canadian maritime vessels over 20 metres in length. < as lemmas |
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