| 单词 | radar echo |
| 例句 | A Doppler shift in the radar echo can be used to determine the speed of a car or the intensity of a rainstorm. College Physics for AP Courses 2015-08-12T00:00:00Z On Tuesday, the San Diego office of the National Weather Service tweeted that it had picked up an odd radar echo that evening. A 'cloud of ladybugs' had the internet buzzing. But was it real? 2019-06-07T04:00:00Z Standard data processing concentrates on the nearest radar echo return point and ignores much of the energy in the rest of the signal. Antarctic revealed in sharper 3D view 2019-05-15T04:00:00Z It works by comparing radar echoes over time to detect minute ground motions. A ‘landslide observatory’: Scientists study Washington’s Rattlesnake Ridge 2018-02-14T05:00:00Z But even in this improved mode, standard data processing concentrates on the nearest radar echo return point and ignores much of the energy in the rest of the signal. Cryosat spacecraft's ice vision is boosted - BBC News 2016-05-12T04:00:00Z On Sunday, French officials said radar echoes from a satellite also identified possible debris in the south Indian Ocean. New planes join aircraft search 2014-03-24T03:48:28Z On that date, the asteroid will be within the gaze of the fixed dish at the Arecibo Observatory in Puerto Rico, which will join Goldstone in detecting radar echoes. Astronomers Gear Up for Asteroid Fly-By of Earth 2011-11-02T19:45:00.443Z Men labored over their plotting tables, noting the information the radar echoes brought back; slowly piecing together the picture. Generals Help Themselves Each blob represented something which had returned a radar echo. Pushbutton War Any "solid" object like an airplane, bird, ship, or even a moisture-laden cloud can cause a radar echo. The Report on Unidentified Flying Objects |
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