Describes the technique used to record time delay and waveform measurements for the Giotto radio science experiment of ESA's mission to Comet Halley. The data were taken by using either two-way measurements (during pre- and post-encounter) or one-way measurements (during encounter with Comet Halley), the downlink of the radio signal of the Giotto spacecraft being received at 8.4 GHz by the 64 m tracking stations of NASA's Deep Space Network (DSN). The waveform measurements were obtained at a sampling frequency of 50 kHz with an open-loop receiver assembly at DSN station Canberra as used for the Voyager/Uranus fly-by. Performance and calibration data are given as relevant to the radio subsystems on the ground and aboard Giotto.
Measurement technique for the Giotto radio science experiment
Messverfahren fuer Telekommunikations-Experimente bei der Giotto-Raumfahrtmission
Journal of Physics E: Scientific Instruments ; 20 , 6, PT.2 ; 768-776
1987
9 Seiten, 25 Quellen
Aufsatz (Zeitschrift)
Englisch
Preliminary results of the Giotto radio science experiment
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