---- Announcements ---------------------------------------------------------------------------
*** A major upgrade is being planned for this service. If you would like to suggest options, features, etc... please email us at GeodeticEnquiries@os.uk ***
2024-12-05: Station SWAS (Swansea) has been destroyed. A replacement station is being installed in the same area and should be online in the next few months.
------------------------------------------------------------------------------------------------------
The "search location" field expects a coordinate or grid reference or postcode see Help with input formats.
The time period given by the selected "start hour" and "end hour" must fall within the day specified in the "Day, Month, Year" fields. I.e. an "end hour" that runs into the following day is not allowed.
Data is available for 45 days (see below for guide to older data). The recommended maximum order size is approximately 96 station hours which is equivalent to 4 stations @ 24hours. Orders larger than this may not complete correctly. The maximum number of stations that can be searched for is 20.
Data is delivered as hourly files at 30 second epoch rate in both RINEX 2 (GPS+GLO basic observables) and RINEX 3 (GPS+GLO+GAL+BDS - all possible observables) formats. See this guide to the naming conventions for the two file types.
OS Net RINEX data is available for use under Creative Commons CC BY 4.0 licence terms.
Find stations by coordinates
All stations
Direct access to the hourly RINEX files (v2 and v3 formats) is available via a browser at - Direct access to OS Net data files or via anonymous ftp at ftp://rinex.ordnancesurvey.co.uk/gps/rinex
When accessing the files via a browser a "Download Manager" type of browser extension will help in the easy selection and download of multiple files.
Satellite navigation data is not provided in the user order. This data can come from users' own receiver data files. However, a daily RINEX 3 format (GPS+GLO+GAL+BDS) broadcast ephemeris file 'EPHM00GBR_S_yyyyddd0000_01D_MN.rnx.zip' is available in the Direct access to OS Net data files folders. Computed (so called "precise ephemeris") orbit files can be downloaded from various GNSS data analysis centres. Instructions on obtaining precise ephemeris are in this guide.
Users who have missed the 45 day cut off for data availability - see this guide on how to obtain OS Net data from external sources.
Scientific and other users with an interest in historic GNSS data should visit the NERC British Isles continuous GNSS Facility (BIGF) https://www.bigf.ac.uk/, which is operated by the British Geological Survey (BGS, https://www.bgs.ac.uk/geology-projects/geodesy/). BIGF archives all OS active station data, along with data from other continuous GNSS (GPS+GLONASS) stations in the UK, holding data that go back as far as 1997, for some stations.
OS Net reference station coordinate listing. This link opens up a comma delimited text file (15 KB) of ETRS89 coordinates of all OS Net stations, current and superceded. Coordinates are given as both cartesian (X, Y, Z) and geodetic (Lat, Long, Height). The OSGB36 National Grid km square reference and antenna height are also given.
The current receiver and antenna types for any data supplied are included in the RINEX headers (and can be seen using any standard text editor). For more details on a particular station, past and present including a history of any changes in the receiver and antenna types see the station log files. Log files are text files in the IGS log format. Also many OS Net logs have an XML version for easier access to the data through "machine reading". OS Net station metadata and IGS-style site logs (and xml versions) can also be browsed on the M3G portal. M3G covers most of Europe but the list of sites can be filtered by country. Select the 'Stations' tab near the top of the page to bring up the list of sites.
- Find the nearest Active stations to a batch of coordinates.
- Antenna phase centre offsets information
- IGS website, source of precise satellite orbits and other data products