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A Ka-band celestial reference frame with applications to Deep Space Navigation

Show simple item record Jacobs, Christopher S. Clark, J. Eric Garcia-Miro, Cristina Horiuchi, Shinji Sotuela, Ioana en_US 2013-09-30T14:34:16Z 2013-09-30T14:34:16Z 2011-10-03
dc.identifier.citation 17th Ka and Broadband Communications: Navigation and Earth Observation Conference, Palermo, Sicily, October 2-5, 2011 en_US
dc.identifier.clearanceno 11-3418
dc.description.abstract The Ka-band radio spectrum is now being used for a wide variety of applications. This paper highlights the use of Ka-band as a frequency for precise deep space navigation based on a set of reference beacons provided by extragalactic quasars which emit broadband noise at Ka-band. This quasar-based celestial reference frame is constructed using X/Ka-band (8.4/32 GHz) from fiftyfive 24-hour sessions with the Deep Space Network antennas in California, Australia, and Spain. We report on observations which have detected 464 sources covering the full 24 hours of Right Ascension and declinations down to −45 deg. Comparison of this X/Ka-band frame to the international standard S/X-band (2.3/8.4 GHz) ICRF2 shows wRMS agreement of ~200 micro-arcsec (μas) in α cos δ and ~300 μas in δ. There is evidence for systematic errors at the 100 μas level. Known errors include limited SNR, lack of instrumental phase calibration, tropospheric refraction mis-modeling, and limited southern geometry. The motivation for extending the celestial reference frame to frequencies above 8 GHz is to access more compact source morphology for improved frame stability and to support spacecraft navigation for Ka-band based NASA missions. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2011. en_US
dc.subject k-band en_US
dc.subject interferometry en_US
dc.subject celestial frame en_US
dc.subject frame tie en_US
dc.subject radio continuum en_US
dc.subject galaxies en_US
dc.title A Ka-band celestial reference frame with applications to Deep Space Navigation en_US
dc.type Preprint en_US
dc.subject.NASATaxonomy Space Communications, Spacecraft Communications, Command and Tracking en_US

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