GEMSTONE – GEodetic Measurements by the collocation of Space Techniques ON Earth

GEMSTONE (GEodetic Measurements by the collocation of Space Techniques ON Earth) is a project that integrates multiple space geodetic techniques—such as GNSS, VLBI, SLR, and DORIS—at common sites to improve Earth observation accuracy. It helps refine measurements of Earth’s shape, rotation, and gravitational field for geodesy and geophysics.