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Eng ID | Term | Definition |
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4181 | radarsonde | Equipment used for determining high-level WINDS, by means of RADAR aimed at a TARGET carried by a free balloon. |
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4182 | radar target | An object which reflects a sufficient amount of a radar signal to produce an echo signal on the radar screen. |
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4183 | radar view | A depiction (photographic reproduction or drawing) of appearance of LANDMARKS on the PPI scope of a radar set at a particular geographic loc... more |
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4184 | radial | A straight line extending outward from a centre. In PHOTOGRAMMETRY, a line or direction from the RADIAL CENTRE to any point on a PHOTOGRAPH... more |
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4185 | radial: nadir | A RADIAL from the nadir point. See NADIR: PHOTOGRAPH. |
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4186 | radial centre | In PHOTOGRAMMETRY, the selected point on a PHOTOGRAPH from which RADIALS (directions) to various IMAGE POINTS are drawn or measured (i.e., ... more |
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4187 | radial distortion | See under DISTORTION. |
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4188 | radial plot | See RADIAL TRIANGULATION. |
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4189 | radial triangulation | The aerotriangulation procedure, either graphical or analytical, in which directions from the RADIAL CENTRE, or approximate RADIAL CENTRE, o... more |
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4190 | radian | The unit of plane angles in the SI SYSTEM. |
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4191 | radiant energy | See ENERGY. |
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4192 | radiant flux | See FLUX. |
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4193 | radiation | Emission or transfer of energy in the form of ELECTROMAGNETIC WAVES or particles. The energy itself is also termed RADIANT ENERGY. |
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4194 | radiation fog | A major type of FOG, produced over a land area when radiational cooling reduces the air temperature to or below its DEW POINT. |
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4195 | radio | Communication by ELECTROMAGNETIC WAVES, without a connecting wire. A RADIO RECEIVER. Sometimes called wireless particularly in British termi... more |
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4196 | radio aids | An aid to navigation transmitting information by radio waves. |
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4197 | radio acoustic ranging | Determining distance by a combination of RADIO and SOUND, the RADIO being used to determine the instant of transmission or reception of the ... more |
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4198 | radio acoustic sound ranging | See RADIO ACOUSTIC RANGING. |
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4199 | radio altimeter | See ALTIMETER. |
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4200 | radiobeacon | A RADIO TRANSMITTER which emits a distinctive or characteristic SIGNAL used for the determination of BEARINGS, COURSES or location. One in... more |