colidarn.
/ˈkəʊlɪdɑː/ A form of radar. (Cf. coherent adj. 1d.)
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radio sounding1922
auto-following1946
automatic following1946
shoran1946
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pulse radar1947
colidar1961
1961 Stitch et al. in Electronics 21 Apr. 51/2 The system uses these properties of the laser's coherent light transmission and is called Colidar, an acronym from coherent light detecting and ranging.
1963 G. Troup Masers & Lasers (ed. 2) ix. 158 A coherent light radar (‘colidar’) has already been made, using a pulsed ruby maser as transmitter.
This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2018).
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n.1961