The UNAVCO Data Center handles data management tasks for GPS/GNSS data and products from thousands of globally distributed permanent stations and ten thousand globally distributed campaign sites. A large fraction of the data are contributed by UNAVCO community investigators. Our GNSS Data Management Overview illustrates the UNAVCO GPS/GNSS data flow from stations and campaigns to users.
UNAVCO archives and distributes GPS/GNSS data in a variety of product levels, formats and access methods. Product levels distinguish between raw data (Level 0), pre-processed data (Level 1), and post-processed/derived (Level 2) data products. In addition to direct file server access, web based graphical user interfaces, command line clients, and web services are available.
|GPS/GNSS Data Products||Access Method / Product Format|
|Data Product Level||Description||Generation Frequency||Creator||File Server||Web Graphical Interface||Web Service|
|Level 1||Standard rate data (15-sec)||Daily, varies||UNAVCO||RINEX||RINEX||n/a|
|High rate data (1-, 2-, 5-sps)||Varies||UNAVCO||RINEX||RINEX||n/a|
|Survey-mode (campaign) data||Daily, varies||UNAVCO||n/a||RINEX||n/a|
|Level 2||Position solution time series||Daily||MIT||ASCII, CSV||ASCII, CSV||ASCII, CSV|
|Velocity solutions||Monthly||MIT||ASCII||ASCII||ASCII, CSV|
|Position offsets (e.g. coseismic)||Varies||MIT||ASCII||n/a||n/a|
|Tropospheric parameter estimates||Daily||CWU||ASCII||n/a||n/a|
|Position solution QA parameters||Daily, varies||UNR||ASCII||ASCII||n/a|
|Position solutions (loose)||Daily||CWU||SINEX||SINEX||n/a|
|Position solutions (constrained)||Daily||MIT||SINEX||SINEX||n/a|
Please review the Data policy for data archived at UNAVCO.
NOTE: Please update your data file access scripts to use our new HTTP File Server.
GPS/GNSS File Server Layout provides a guide for the layout of our data file server holdings of GPS/GNSS and Meteorological data. It also links to HTTP file access script examples. For historic reference, see our legacy FTP Server Layout.
Web Services provide RESTful HTTP access to data (e.g. position time series for stations analyzed by GAGE and Central Washington University , meteorological data from surface sensors colocated with GPS/GNSS stations) and selected metadata.
Derived Data Products (also referred to as Level 2 Products) are created from GNSS raw data and other lower level products such as RINEX.
Associated Data Products are created from other products and models.
Custom Data Requests can be made for collecting high-rate or real-time GPS/GNSS data at specific sites for specified time periods.
Community Data Formats have been developed and are hosted at the UNAVCO/GAGE Data Center. UNAVCO has helped develop GPS/GNSS data and metadata standards, like BINEX, in collaboration with the UNAVCO/GAGE geosciences community. UNAVCO hosts documentation about the BINEX data and metadata standard developed by the UNAVCO community and GNSS receiver manfacturers.
A collection of Data Operations pages for monitoring of archiving and QC.
Last modified: 2022-03-16 14:35:38 America/Denver