Scripps Orbit and Permanent Array Center (SOPAC)

摘要

The Scripps Institution of Oceanography, University of California, San Diego, maintains SOPAC, which provides precise, rapid, ultra-rapid, and hourly orbits for the International GNSS Service (IGS) and NOAA's Global Systems Division (GSD). ManyGPS-related services and tools are available from SOPAC's website such as SCOUT (a global ITRF Coordi-nates Generator), Site Information Manager (SIM), On-line Map Interface (SOMI) and GPS Explorer. SOPAC archives 24-hour RINEX data from about 1,500 continuous GPS sites from more than 20 scientific networks around the world, with a concentration in western North America. SOPAC also maintains the operational center for the California Spatial Reference Center, or CSRC [http://csruicsd.eduA.Jhe CSRC provides California's geodetic framework for scientific, engineering, and geographical information systems in partnership with the National Geodetic Survey. SOPAC also collects and archives high-rate (1 Hz), low latency (1 second) GPS data from stations in California. For information about access to real-time data streams, visit httpj/sopac. uad.edu/projects/reakime/.