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fold faq How the Doppler effect with Doris can give the distance between the satellite and the Earth?

April 26, 2017distance Doppler doris earth fold satellite

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fold faq How the Doppler effect with Doris can give the distance between the satellite and the Earth?

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Doris can give the position of a satellite because it compares a model of orbit (giving position and velocity) with its measurements: Measurement data for permanent network beacons are processed to yield the satellite’s precise trajectory. This processing includes modelling of forces acting on the satellite (terrestrial gravitation, etc.) in order to determine its precise trajectory.