NDLI: The search for reference sources for delta vlbi navigation of the galileo spacecraft

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The search for reference sources for delta vlbi navigation of the galileo spacecraft

Content Provider	NASA Technical Reports Server (NTRS)
Author	Linfield, R. P. Ulvestad, J. S.
Copyright Year	1986
Description	A comprehensive search was made in order to identify celestial radio sources that can be used as references for navigation of the Galileo spacecraft by means of VLBI observations. The astronomical literature was seached for potential navigation sources, and several VLBI experiments were performed to determine the suitability of those sources for navigation. The results of such work performed since mid-1983 is reported. A summary is presented of the source properties required, the procedures used to identify candidate sources, and the results of the observations of these sources. The lists of souces presented are not meant to be taken directly and used for VLBI navigation, but they do provide a means of identifying the radio sources that could be used at various positions along the Galileo trajectory. Since the reference sources nearest the critical points of Jupiter encounter and probe release are rather weak, it would be extremely beneficial to use a pair of 70-m antennas for the VLBI measurements.
File Size	708285
Page Count	12
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19860013329
Archival Resource Key	ark:/13960/t6256h81b
Language	English
Publisher Date	1986-02-15
Access Restriction	Open
Subject Keyword	Space Radiation Deep Space Network Very Long Base Interferometry Spacecraft Trajectories Celestial Reference Systems Radio Stars Interplanetary Navigation Ground Stations Radio Sources Astronomy Galileo Spacecraft Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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