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| 单词 | synthetic aperture |
| 释义 | > as lemmassynthetic aperture synthetic aperture n. a simulated aperture obtained by moving an aerial or detector transversely during reception so as to increase its effective length; usually attributive, esp. designating radar employing this. ΚΠ 1962 IRE Trans. Mil. Electronics 6 111 (heading) Some early developments in synthetic aperture radar systems. 1962 IRE Trans. Mil. Electronics 6 113/2 Differences between physical and synthetic apertures. 1977 Sci. Amer. Oct. 89/1 Since resolution is proportional to the length of the antenna but inversely proportional to the range, for synthetic-aperture radar the two effects compensate for each other... Synthetic-aperture radar thus makes it possible to obtain high-resolution images of terrain many miles away. 1979 McGraw-Hill Yearbk. Sci. & Technol. 224/2 Holography has also been applied, in the form of synthetic-aperture techniques, to the B-scan acoustic reflection systems to provide greater detail in the body areas located near the acoustic transducer. < as lemmas |
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