NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The Celestial Reference Frame at X/Ka-band (8.4/32 GHz)A celestial reference frame at X/Kaband (8.4/32 GHz) has been constructed using fiftyone 24-hour sessions with the Deep Space Network. We report on observations which have detected 436 sources covering the full 24 hours of right ascension and declinations down to -45 deg. Comparison of this X/Ka-band frame to the S/X-band (2.3/8.4 GHz) ICRF2 shows wRMS agreement of 200 micro-arcsec ( mu as) in alpha cos delta and 290 mu as in delta. There is evidence for zonal errors at the 100 mu as level. Known errors include limited SNR, lack of phase calibration, troposphere mismodelling, and limited southern geometry. The motivations for extending the ICRF to frequencies above 8 GHz are to access more compact source morphology for improved frame stability, to provide calibrators for phase referencing, and to support spacecraft navigation at Ka-band.
Document ID
20150007025
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Jacobs, C. S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Clark, J. E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Heflin, M. B.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Skjerve, L. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sovers, O. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Garcia-Miro, C.
(Instituto Nacional de Tecnica Aeronautica Madrid, Spain)
Moll, V. E.
(Instituto Nacional de Tecnica Aeroespacial Madrid, Spain)
Horiuchi, S.
(Commonwealth Scientific and Industrial Research Organization Canberra, Australia)
Date Acquired
April 30, 2015
Publication Date
October 4, 2010
Subject Category
Astronomy
Meeting Information
Meeting: Reference Frames for Applications in Geosciences (REFAG2010)
Location: Marne la Vallee
Country: France
Start Date: October 4, 2010
End Date: October 8, 2010
Sponsors: Conseil National de l'Information Geographique
Distribution Limits
Public
Copyright
Other
Keywords
interferometry
celestial reference
active galactic nuclei
catalogs
radio continuum
astrometry
reference systems
quasars

Available Downloads

There are no available downloads for this record.
No Preview Available