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Application of high precision two-way S-band ranging to the navigation of the Galileo Earth encountersThe application of high-accuracy S/S-band (2.1 GHz uplink/2.3 GHz downlink) ranging to orbit determination with relatively short data arcs is investigated for the approach phase of each of the Galileo spacecraft's two Earth encounters (8 December 1990 and 8 December 1992). Analysis of S-band ranging data from Galileo indicated that under favorable signal levels, meter-level precision was attainable. It is shown that ranginging data of sufficient accuracy, when acquired from multiple stations, can sense the geocentric angular position of a distant spacecraft. Explicit modeling of ranging bias parameters for each station pass is used to largely remove systematic ground system calibration errors and transmission media effects from the Galileo range measurements, which would otherwise corrupt the angle finding capabilities of the data. The accuracy achieved using the precision range filtering strategy proved markedly better when compared to post-flyby reconstructions than did solutions utilizing a traditional Doppler/range filter strategy. In addition, the navigation accuracy achieved with precision ranging was comparable to that obtained using delta-Differenced One-Way Range, an interferometric measurement of spacecraft angular position relative to a natural radio source, which was also used operationally.
Document ID
19950054119
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pollmeier, Vincent M.
(Jet Propulsion Lab, California Inst. of Tech., Pasadena, CA US, United States)
Kallemeyn, Pieter H.
(Jet Propulsion Lab, California Inst. of Tech., Pasadena, CA US, United States)
Thurman, Sam W.
(Jet Propulsion Lab, California Inst. of Tech., Pasadena, CA US, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: Spaceflight dynamics 1993; AAS(NASA International Symposium, 8th, Greenbelt, MD, Apr. 26-30, 1993, Parts 1 & 2 . A95-85716
Publisher: American Astronautical Society (Advances in the Astronautical Sciences, Vol. 84, Pts. 1 & 2)
ISSN: 0065-3438
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Accession Number
95A85718
Distribution Limits
Public
Copyright
Other

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