Data sets

LEVEL 0: RINEX observation data
LEVEL 2 product: Long term trend station coordinates - as absolute gravity aligned dN,dE,dU
LEVEL 3 product: Long term trend station velocities - as a map of vertical motions showing spatial variations, with some consideration of the station’s geological setting
LEVEL 3 product: Near real time changes in tropospheric parameters, as an animated map of 15 minute IWV estimates for one day

BIGF provides a unique source of quality assured RINEX format GNSS data and derivative products for the British Isles. There is also the opportunity to design and create new products, to facilitate downstream research, where for example scientists are unfamilar with GNSS data or do not have the necessary data processing capability. We anticipate for example, that scientists such as meteorologists will have a need for atmospheric water vapour products. For non-standard product design issues please contact us, otherwise data sets are divided into 4 levels - from raw data (level 0) to products (levels 1-3), described below:

Description LEVEL 0 - GNSS RINEX observation and related data

Description LEVEL 1 - Raw product

  • How to access these products.
  • Long term trend station coordinates (raw estimates). A set of daily, network-specific SINEX files containing station-specific coordinate estimates from each daily processing solution, as text, sample.
  • Long term trend tropospheric parameters (raw estimates). A set of daily, network-specific SINEX TRO files containing station-specific 1 hourly troposphere zenith total delay estimates from each daily processing solution, as text, sample.

Description LEVEL 2 - Product time series

  • How to access these products.
  • Long term trend station coordinates (QA’d time series). A set of station-specific files containing station-specific daily coordinate estimates and time, based on the estimates in the daily SINEX files, as text: Cartesian X,Y,Z sample; Cartesian dX,dY,dZ sample; or North,East,Up (dN,dE,dU) sample; and as graphics: dN,dE,dU sample.
  • Long term trend tropospheric parameters (QA’d time series). A set of station-specific files containing station-specific hourly, daily-averaged or monthly averaged tropospheric zenith total delay, zenith wet delay, and integrated water vapour estimates and time, based on the estimates in the daily SINEX TRO files, as text: ZTD,ZWD,IWV sample; and as graphics: dZTD,dZWD,dIWV sample.

Description LEVEL 3 - Product trend

  • How to access these products.
  • Long term trend station velocities. One network-specific file containing station-specific velocities and their uncertainties based on a time series analysis of the coordinates in the daily SINEX files, as text, sample, and as graphics (e.g. a map of vertical motions showing spatial variations, with some consideration of the station’s geological setting, sample).