单词 | iso-echo |
释义 | > as lemmasiso-echo iso-echo adj. Brit. /ˌʌɪsəʊˈɛkəʊ/ , U.S. /ˌaɪsoʊˈɛkoʊ/ applied to a line on a radar display along which the echo signal (from clouds and the like) has the same strength, and to devices and techniques relating to such lines (as in the detection of rain and atmospheric turbulence).ΘΚΠ society > communication > telecommunication > radio communications > radio equipment > [adjective] > radar apparatus back-to-back1626 iso-echo1951 moving target1953 monostatic1957 squinted1966 1951 Jrnl. Meteorol. 8 274/1 The distribution of echo intensity from all points in the two-dimensional cut through a storm may be plotted by use of the contour-mapping techniques suggested by Langille and Gunn or Atlas. The latter techniques produce a contour chart showing isopleths of reflected power throughout the area of the storm. (These isopleths will be referred to as ‘isoecho lines’ or ‘power contours’.) 1959 L. J. Battan Radar Meteorol. xv. 141 (heading) Isoecho contouring. 1959 L. J. Battan Radar Meteorol. xv. 141 If range differences are negligible, the isoecho contour corresponds to a line of equal cloud reflectivity and equal rain intensity. 1961 Aeroplane 101 573/2 For general weather observation the C.R. 353 has a 12-in. ppi unit incorporating iso-echo circuits which enable the operator to make cloud density determinations. 1969 New Scientist 4 Dec. 509/1 A..height-finding radar system has been modified to observe cloud and rain up to 160 miles out to sea..and to plot contours of constant rain intensity (iso-echo contours). < as lemmas |
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