the use of radiosondes or radar techniques for investigating the atmosphere, sea bed, etc.; a measurement made by such means.
| 单词 | θ197915 |
| 释义 | society > communication > telecommunication > radio communications > [noun] > other methods or operations > radar > types of (7) radio sounding1922 the use of radiosondes or radar techniques for investigating the atmosphere, sea bed, etc.; a measurement made by such means. auto-following1946 (a) adj. (esp. of radar) that automatically follows a target; (b) n. = auto-follow adj. n. automatic following1946 the automatic following by a radar of a chosen target; = auto-following adj. n. at auto-, comb._form1 affix 2b; frequently attributive. shoran1946 A secondary radar system, used for precision navigation and for distance measurement, in which an aircraft or ship determines its distance from… auto-follow1947 (a) adj. = auto-following adj. n.(a); (b) n. = automatic following n. at automatic, adj. n.compounds. pulse radar1947 a radar system that transmits pulses of radio energy rather than a continuous beam. colidar1961 A form of radar. (Cf. coherent, adj. 1d.) |
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