Datasets of ionospheric parameters (TEC, SI, positioning errors) from Lisbon airport area for 2014-2019
Description
Here we present datasets based on data from a GNSS receiver with the SCINDA software installed in Lisbon airport area from December of 2014 to February of 2019. The installed equipment was a NovAtel EURO4 with a JAVAD Choke-Ring antenna. The presented data consists of 2 parts: (1) data produced by SCINDA; (2) processed data. The presented datasets cover the time interval from December 2014 to February 2019, except for the SCINDA data for 2015, which can be found in a companion dataset "Datasets of ionospheric parameters provided by SCINDA GNSS receiver from Lisbon airport area" (DOI: 10.17632/kkytn5d8yc.1). All the data are in an archived format and have 1 min cadence. The data produced by SCINDA include the general messages on quality of records (*.msg), random number generator files (*.rng), raw observables as the signal-to-noise (S/N) ratios, pseudoranges and phases (*.obs), receiver position information (*.psn), ionosphere scintillations monitor (*.ism) and ionospheric parameters: total electron content (TEC), rate of change of TEC index (ROTI), and the scintillation index S4 (*.scn). The processed data are the TEC, S4, ROTI and position (latitude, longitude, altitude) extracted from the SCINDA data and processed (details can be found in the companion paper https://doi.org/10.6084/m9.figshare.21720524.v1). In general the processing includes the removal of outliers and the data from non-GPS satellites, the replacement of missing data by "NA", application of the elevation mask to the TEC data (>= 15º). Since the receiver was not calibrated when installed we also provide a provisional calibrated TEC data (see the companion paper for details). The processing of the original SCINDA data was done using (1) a dedicated "SCINDA-Iono" toolbox for MATLAB developed by T. Barlyaeva (2019, updated 2022) and available online via MathWorks File Exchange system (https://www.mathworks.com/ matlabcentral/fileexchange/71784- scinda- iono _ toolbox); (2) scripts for R developed by A. Morozova (2022) and available online via GitHub (https://github.com/anitkageo/SCINDA-R-scripts). Both the MATLAB toolbox and the R scripts allow to calculate 1-min and 1-hour means for ionospheric parameters both for each of available receiver-satellite pairs and averaged over all available satellites during the analyzed hour, however the toolbox and the scripts are not interchangeable (please see the companion paper for more details). The provided datasets can be of interest for the GNSS and ionosphere scientific communities.
Files
Steps to reproduce
The uploaded data are accompanied by short README file to help users. The detailed description is also available in the companion paper (https://doi.org/10.6084/m9.figshare.21720524.v1).