Use of Reference Frames for Interplanetary Navigation at JPL
Navigation of interplanetary spacecraft is typically based on range, Doppler, and differential interferometric measurements made by ground-based telescopes. Successful tracking requires knowledge of the telescope positions in the terrestrial reference frame. Spacecraft move against a background of extra-galactic radio sources and navigation depends upon precise knowledge of those background radio source positions in the celestial reference frame. Work is underway at JPL to reprocess historical VLBI and GPS data to improve realizations of the terrestrial and celestial frames. The purpose of this brief paper is to provide a snapshot of reference frame results.
KeywordsReference frames Navigation VLBI GPS ITRF ICRF
The research described herein was performed at the Jet Propulsion Laboratory of the California Institute of Technology, under a contract with the National Aeronautics and Space Administration. Government sponsorship acknowledged. Copyright 2011 © California Institute of Technology.
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