Space Geodesy Project Office (690.2) Home

Full View of Asteroid Vesta

Full View of Asteroid Vesta: As the Dawn spacecraft travels to its next destination, this mosaic synthesizes some of the best views the spacecraft had of the giant asteroid Vesta.

Press Releases & Feature Stories

How Satellite Laser Ranging Got its Start 50 Years Ago

Fifty years ago, NASA announced the first successful tracking of a satellite using a laser, a technique now standard for precisely determining satellite orbits.

Space Geodesy Project Awards

Congratulations to the SGP Team for receiving the Robert H. Goddard Exceptional Achievement Group Award for Engineering and to Jan McGarry, for her RHG Award for Exceptional Engineering Achievement.
NASA meatball

NASA Highlights Mars, Ozone Hole, and the Sun at American Geophysical Union

NASA researchers will present new findings on a wide range of Earth and space science topics next week at the annual meeting of the American Geophysical Union (AGU).

NASA and US Air Force Reach Agreement on GPS-LRA Project

An agreement between NASA and the US Air Force is now in place giving NASA the approval to move forward with the GPS Laser Retroreflector Array Project, supplying retros for the GPS-III satellites.

Science Outreach Reaches In

Some 60 scientists, researchers, interns and outreach personnel manned stations for the annual Science Jamboree at NASA’s Goddard Space Flight Center in Greenbelt, Md., on July 16.
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The Space Geodesy Project Office manages the operations and development of NASA’s Space Geodetic Network that is comprised of the four major space geodetic observing systems: Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), Global Navigation Satellite System (GNSS), and the Doppler Orbitography and Radio-positioning by Integrated Satellite (DORIS) system. The Space Geodesy Project (SGP) is a collaborative effort between Goddard Space Flight Center, NASA’s Jet Propulsion Laboratory, and other U.S. and international partners. The primary goals of the SGP are to deliver and maintain a high precision Terrestrial Reference Frame and provide the data and analysis essential for fully realizing the measurement potential of the current and coming generation of Earth Observing spacecraft.

SGP recently completed a prototype core site with all four geodetic techniques at NASA's Geophysical and Astronomical Observatory. This site is now the basis for the ongoing deployment of NASA’s next generation Space Geodetic Network that is part of NASA's contribution to the Global Geodetic Observing System (GGOS). This upgraded global network will significantly improve the International Terrestrial Reference Frame (ITRF) as well as all other network products (e.g. precision orbit determination, local & regional deformation, astrometry, etc.), with concomitant benefits to the supported and tracked missions, science projects, and engineering applications.

Contact Us

Dr. Stephen M Merkowitz
Deputy Project Scientist [663]
Project Manager [690.2]
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