Gain, phase and frequency stability of DSS-42 and DSS-43 vor Voyage Uranus encounter

Details Gain, phase and frequency stability of DSS-42 and DSS-43 vor Voyage Uranus encounter Gain, phase and frequency stability of DSS-42 and DSS-43 vor Voyage Uranus encounter

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986tdar.nasa..164c&link_type=abstract

In its The Telecommunications and Data Acquisition Report p 164-175 (SEE N86-22784 13-32)

Physics

1

Antenna Design, Cassegrain Antennas, Phase Modulation, Radio Occultation, Signal Stabilization, Algorithms, Doppler Effect, Frequency Shift, Radio Signals, Subreflectors, Uranus (Planet), Voyager Project

Scientific paper

Theoretically rigorous definitions are derived of such parameters as RF signal path length, phase delay, and phase/frequency stability in a Cassegrainian antenna applicable to a narrow bandwidth channel, as well as algorithms for evaluating these parameters. This work was performed in support of the Voyager spacecraft encounter with Uranus in January 1986. The information was needed to provide Voyager/Uranus radio science researchers with a rotational basis for deciding the best strategy to operate the three antennas involved during the crucial 5-hour occultation period of the encounter. Such recommendations are made at the end of the article.

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