Radio science ground data system for the Voyager-Neptune encounter, part 1

Details Radio science ground data system for the Voyager-Neptune encounter, part 1 Radio science ground data system for the Voyager-Neptune encounter, part 1

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991tdar.nasa..109k&link_type=abstract

In its The Telecommunications and Data Acquisition Report p 109-127 (SEE N94-29613 08-32)

Astronomy and Astrophysics

Astronomy

Data Acquisition, Deep Space Network, Flyby Missions, Neptune (Planet), Radio Astronomy, Spacecraft Tracking, Tracking Stations, Uranus (Planet), Voyager Project, Bandwidth, Frequency Stability, Occultation, Spacecraft Trajectories, Superhigh Frequencies

Scientific paper

The Voyager radio science experiments at Neptune required the creation of a ground data system array that includes a Deep Space Network complex, the Parkes Radio Observatory, and the Usuda deep space tracking station. The performance requirements were based on experience with the previous Voyager encounters, as well as the scientific goals at Neptune. The requirements were stricter than those of the Uranus encounter because of the need to avoid the phase-stability problems experienced during that encounter and because the spacecraft flyby was faster and closer to the planet than previous encounters. The primary requirement on the instrument was to recover the phase and amplitude of the S- and X-band (2.3 and 8.4 GHz) signals under the dynamic conditions encountered during the occultations. The primary receiver type for the measurements was open loop with high phase-noise and frequency stability performance. The receiver filter bandwidth was predetermined based on the spacecraft's trajectory and frequency uncertainties.

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