radio Doppler

radio Doppler

[′rād·ē·ō ′däp·lər]
(engineering)
Direct determination of the radial component of the relative velocity of an object by an observed frequency change due to such velocity.
References in periodicals archive ?
The open-loop recording of radio Doppler and signal spectrum transmitted by the NASA mission were stored on Mars Express and then downloaded to Earth.
The flyby, at a planned altitude of just 50 km, will collect very precise radio Doppler data to help determine the moon's gravity field more accurately than ever.
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