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NASA's Next Generation Space Geodesy NetworkNASA's Space Geodesy Project (SGP) is developing a prototype core site for a next generation Space Geodetic Network (SGN). Each of the sites in this planned network co-locate current state-of-the-art stations from all four space geodetic observing systems, GNSS, SLR, VLBI, and DORIS, with the goal of achieving modern requirements for the International Terrestrial Reference Frame (ITRF). In particular, the driving ITRF requirements for this network are 1.0 mm in accuracy and 0.1 mm/yr in stability, a factor of 10-20 beyond current capabilities. Development of the prototype core site, located at NASA's Geophysical and Astronomical Observatory at the Goddard Space Flight Center, started in 2011 and will be completed by the end of 2013. In January 2012, two operational GNSS stations, GODS and GOON, were established at the prototype site within 100 m of each other. Both stations are being proposed for inclusion into the IGS network. In addition, work is underway for the inclusion of next generation SLR and VLBI stations along with a modern DORIS station. An automated survey system is being developed to measure inter-technique vectorties, and network design studies are being performed to define the appropriate number and distribution of these next generation space geodetic core sites that are required to achieve the driving ITRF requirements. We present the status of this prototype next generation space geodetic core site, results from the analysis of data from the established geodetic stations, and results from the ongoing network design studies.
Document ID
20120013616
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Desai, S. D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gross, R. S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hilliard, L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Lemoine, F. G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Long, J. L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ma, C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
McGarry, J. F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Merkowitz, S. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Murphy, D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Noll, C. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Pavlis, E. C.
(Maryland Univ. Baltimore, MD, United States)
Pearlman, M. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stowers, D. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Webb, F. H.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 26, 2013
Publication Date
July 23, 2012
Subject Category
Geophysics
Report/Patent Number
GSFC.ABS.00391.2012
Meeting Information
Meeting: International GNSS Service (IGS) Workshop 2012
Location: Olsztyn
Country: Poland
Start Date: July 23, 2012
End Date: July 27, 2012
Sponsors: NASA Headquarters
Distribution Limits
Public
Copyright
Public Use Permitted.
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