The Laboratory operates a Global Positioning System (GPS) Continuously Operating Reference Station (CORS) at its Site 300 facility in collaboration with Bay Area Regional Deformation Northern California Continuous GPS Network and Trimble Navigation Limited. This facility continuously collects and records GPS data, and this reference station data are then made available to users.
The following links provide LLNL data.
- National Geodetic Survey (NGS) home page for the Site 300 CORS base station: Type S300 into "enter SiteID"
- User-friendly NGS data
- CORS Proxy Data Availability
- RTK Transmission Frequency: 171.975 MHz
Site 300 is located in the hills 17 miles east of the LLNL main site.
