• Laser ranging to the moon
    Laser Ranging to the Moon
    NGSLR, located at NASA GSFC's Goddard Geophysical and Astronomical
    Observatory (GGAO),is shown ranging to the Lunar Reconnaissance Orbiter (LRO)
    orbiting the Moon. The LRO Laser Ranging (LR) system enables the spacecraft
    to achieve its precision orbit determination requirement.
  • antenna
    VGOS
    VGOS, located at NASA GSFC's Goddard
    Geophysical and Astronomical Observatory
    (GGAO), is the next generation of
    geodetic VLBI systems
  • Monument brace
    Drilled Brace Monument for GNSS Antenna
    The newly installed drilled brace monument for the
    Global Navigation Satellite System (GNSS) antenna at
    NASA GSFC's Goddard Geophysical and Astronomical
    Observatory (GGAO). The multi-GNSS-capable
    receiver tracks signals from several GNSS including
    GPS, GLONASS, and Galileo.
  • DORIS
    DORIS Antenna
    The Doppler Orbitography and Radio-positioning Integrated
    by Satellite (DORIS) antenna located at NASA GSFC's Goddard
    Geophysical and Astronomical Observatory (GGAO) tracks
    satellites equipped with DORIS beacons; NGSLR can be seen
    in the background.

KPGO Blog
  • Sun pointing test

SGP is completing the implementation of a new 12-meter broadband Very Long Baseline Interferometry (VLBI) station at NASA's Kōkeʻe Park Geophysical Observatory (KPGO) on Kauai, Hawaii. This blog follows the progress towards the station completion with updates from the team about once a week.

Latest news

Celebrating 50 years of transatlantic geodetic radio science
04/06/2018

Radome at MIT HaystackFifty years ago this week, in April 1968, an historic event took place involving MIT Haystack Observatory radio telescope in Westford, Massachusetts, and its counterpart at Onsala Space Observatory in Onsala, Sweden: the first transatlantic geodetic very long baseline interferometry (VLBI) observations.

This occasion marks an important anniversary in geodesy; although the April observations were not entirely successful in terms of usable data, as VLBI was in its very earliest days, it was the first time that geodetic VLBI was performed across the Atlantic.

Today, NASA's Space Geodesy Project (SGP) operates a worldwide system of modern geodetic sites, including the broadband VGOS (VLBI Global Observing System) network, in collaboration with international partners around the globe.

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New NASA VLBI Civil Servant position open for applications
03/13/2018

A new NASA VLBI Civil Servant position is now posted and open for applications. There are two postings, one senior and one mid-level, and applicants should decide which one best fits his/her experience level:

GS-14: http://www.usajobs.gov/GetJob/ViewDetails/493509700

GS-15: http://www.usajobs.gov/GetJob/ViewDetails/493510000

The postings currently close on Tuesday, March 27, 2018. Please note that the job is only open to U.S. citizens and U.S. nationals.


New MIT Haystack Observatory blog for NASA/SGP-related activities
03/07/2018

The MIT Haystack staff have started a blog which visually documents some of the NASA/SGP-related activities including KPGO, GGAO, Westford, and the MGO development.


UNAVCO News: The NASA Space Geodesy Project -- An Update
02/24/2018

NASA’s Space Geodesy Project (SGP) was initiated in order to develop and maintain a global network of next-generation space geodetic observing instruments. Core sites around the globe will use three or four of the primary space-geodetic techniques: Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS), and the Global Navigation Satellite System (GNSS). Deployments of these instruments with next-generation measurement capabilities have been underway since 2011.

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Read all news


Using Quasars to Measure the Earth: A Brief History of VLBI


Looking Down a Well: A Brief History of Geodesy


Staff profiles