Precise orbit determination of a geosynchronous satellite with differential very-long-baseline interferometryThe use of differential VLBI (DVLBI) to determine the orbit of a U.S. geosynchronous satellite with a position accuracy of a few meters is examined. DVLBI was employed to track the geosynchronous satellite DSCS-II; two observation channels with 2 MHz bandwidth each in a 2 GHz band were used to receive the telemetry signal of the satellite and quasar radio signals. The random observation, delay, station location, and quasar position errors are discussed. The correlation processing of the quasar and satellite signals is described. The accuracy of the estimated satellite position is evaluated using a covariance analysis. It is determined that the satellite position was estimated with an accuracy of about 4 m at the center of the observation arc. It is noted that the modeling error of the solar radiation pressure factor, ionospheric correction error, and observation error need to be corrected in order to provide more accurate orbit determinations.
Document ID
19870045156
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shiomi, Tadashi (Ministry of Posts and Telecommunications Radio Research Laboratory, Kashima, Japan)
Kawano, Nobuyuki (Tokai University Kumamoto, Japan)
Border, James S. (Ministry of Posts and Telecommunications Ibaraki, Japan)
Donivan, Frank F. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking