Locating The Geocenter From GPS Measurements

Report presents analysis of Global Positioning System (GPS) measurements taken during 3-week geodetic experiment in early 1991. Involved constellation of 15 GPS satellites operational at that time, plus 21 GPS receiving stations at widely distributed sites, all but 4 of which in Northern Hemisphere. Analysis consisted principally of estimation of location of center of mass of Earth relative to GPS receiving stations. As part of analysis, GPS estimates of geocenter compared with estimates obtained by satellite laser ranging (SLR).