Sky wave transhorizon radar
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1 Lunar Radar Control
Until now Nostradamus, ONERA's" sky wave" transhorizon radar, has used the atmosphere's stratification properties to detect objects well beyond the horizon. For this, Nostradamus ' radar waves are reflected by the ionosphere, at altitudes between 100 and 300km, and make it possible to detect moving targets well beyond the horizon, from a few hundred to several thousands of kilometers away