... The technique uses the propagation e#ects on a spacecraft downlink carrier. ... The masers have similar crucial qualititiies as the spacecraft carrier: high signal/noise, narrow lines, and polarization. ...
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Ссылки http://www.naic.edu/vscience/schedule/tpfiles/HeilestagA2980tp.ps -- 86.8 Кб -- 10.03.2015 Похожие документы
... Starting in 2005, a series of bistatic radar experiments was begun using the Mars Express spacecraft. ... at 3.6 and 13.1 cm wavelengths are beamed from the spacecraft toward the (moving) specular point on Mars' surface; echoes are ...
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Ссылки http://www.naic.edu/vscience/schedule/tpfiles/SimpsontagR2223tp.ps -- 93.7 Кб -- 08.03.2006 Похожие документы
... and Heliospheric Observatory (SOHO) spacecraft, suffered communication loss with ... to be studied further by the Messenger spacecraft over the next several years ... comet 103P/Hartley 2 allowed the EPOXI spacecraft to image the nucleus during its ...
... and Heliospheric Observatory (SOHO) spacecraft, suffered communication loss with ... to be studied further by the Messenger spacecraft over the next several years ... comet 103P/Hartley 2 allowed the EPOXI spacecraft to image the nucleus during its ...
... Solar and Heliospheric Observatory (SOHO) spacecraft, suffered communication loss with European Space Agency and NASA ground ... Radar images of Mercury reveal features to be studied further by the Messenger spacecraft over the next several years. ...
... ob jects between 20 meters to several kilometers in diameter, with a wide range of rotation periods and compositions, and features several ob jects that should provide images comparable in their detail to those obtained by spacecraft flyby missions ...
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Ссылки http://www.naic.edu/vscience/schedule/tpfiles/BennertagR2791tp.pdf -- 48.5 Кб -- 19.09.2012 Похожие документы
... Recent results from NASA's Wide-field Infrared Explorer (WISE) spacecraft indicate that this ob ject is 1 km in diameter and that it will be a very strong radar target. ...
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Ссылки http://www.naic.edu/vscience/schedule/tpfiles/BennertagR2920tp.pdf -- 47.5 Кб -- 15.03.2014 Похожие документы
... With b oth a spacecraft flyby and extensive ground-based observations during its Earth passage, this is an excellent opp ortunity to provide 'ground truth' for this imaging metho d and as well as remote sensing studies of asteroids in general. ...
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Ссылки http://www.naic.edu/vscience/schedule/tpfiles/BlacktagR1928tp.pdf -- 40.9 Кб -- 25.05.2004 Похожие документы