GPS/GNSS Data
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 | |
| Events (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 |
Data Access Methods
Data Access Methods include GUI and command line tools for site search and data access, direct HTTPS File Server access for browsing and command line scripts, REST web services, real-time data access streams, derived products access, and custom data requests. Please review the Data policy for data archived at UNAVCO.
Data Formats
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.
Data Operations
A collection of Data Operations pages for monitoring of archiving and QC.
Last modified: 2023-01-20 11:39:56 America/Denver