Showing results 1 to 20 of 31
  Evaluation of the automatic ionogram scaling for use in real-time ionospheric density profile specification: Dourbes DGS-256/ARTIST-4 performance.; ; et al in Annals of Geophysics = Annali di Geofisica (2012), 55(2), 283-291 Detailed reference viewed: 21 (2 ULg)On the real time reconstruction of the ionospheric electron density profile based on concurrent measurements from collocated digital ionosonde and GNSS receiver; ; et al (2011, May) Detailed reference viewed: 26 (1 ULg)On the impact of ionospheric variability and disturbances on GNSS-based positioning applications; Wautelet, Gilles  ; et alin Geophysical Research Abstracts (2011, April), 13(ABS. No EGU2011-12067), Detailed reference viewed: 26 (4 ULg)Local ionospheric electron density profile reconstruction in real time from simultaneous ground-based GNSS and ionosonde measurements; ; et al in Advances in Space Research (2011), 47(7), 1172-1180 Detailed reference viewed: 35 (6 ULg)RMI-Dourbes ionosonde database - Status 2010; ; et al Report (2011) Detailed reference viewed: 25 (2 ULg) Local Operational Geomagnetic Index K Calculation (K-LOGIC) from digital ground-based magnetic measurements; ; Warnant, René Report (2011) Detailed reference viewed: 23 (4 ULg)K-type geomagnetic index nowcast with data quality control; ; Warnant, René in Annals of Geophysics = Annali di Geofisica (2011), 54(3), 285-295 Detailed reference viewed: 36 (7 ULg)The RMI Space Weather and Navigation Systems (SWANS) projectWarnant, René ; ; Wautelet, Gilles et alConference (2010, July) Detailed reference viewed: 17 (1 ULg)A statistical study of the TEC storm-time response at European middle latitudes for use in ionospheric nowcast and forecast; ; Warnant, René in Doherty, P.; Hernandez-Pajares, M.; Juan, J.-M. (Eds.) et al The International Beacon Satellite Symposium 2010 (2010, June) Detailed reference viewed: 16 (0 ULg)M-Ingestion: Simultaneous Ingestion of Ionosonde and GNSS Data into the NeQuick ModelBidaine, Benoît ; ; et alin Doherty, P.; Hernández-Pajares, M.; Juan, J.-M. (Eds.) et al The International Beacon Satellite Symposium BSS2010 (2010, June) The steady increase in volume and quality of ionospheric measurements allows for potential improvements in the existing ionospheric models. In particular ionosonde and Global Navigation Satellite Systems ... [more ▼] The steady increase in volume and quality of ionospheric measurements allows for potential improvements in the existing ionospheric models. In particular ionosonde and Global Navigation Satellite Systems (GNSS) data provide complementary information for original developments regarding the NeQuick model, a quick-run empirical model of the electron density supplying flexible solutions for various applications. Indeed NeQuick is often used to investigate radiowave propagation issues: among others it has been implemented within the Galileo Single Frequency Ionospheric Correction Algorithm. The model is particularly suited to be used within an optimization procedure called ingestion. In this framework, an "effective ionization level" Az plays the role of solar activity input in order to fit a specific dataset eg of slant Total Electron Content (TEC). However larger discrepancies can then obviously be observed towards other parameters eg the F2-layer critical frequency foF2. This draws the interest for a multiple ingestion - or m-ingestion - scheme implying an adaptation towards several datasets by defining several effective parameters. In our study, we perform m-ingestion of ionosonde and GNSS data providing us with slant TEC. In fact it allows us to constrain the electron density profile slab thickness. For the purpose, a high solar activity period (year 2002) was analysed based on collocated digisonde and EUREF GNSS observations at a mid-latitude site, Dourbes (50.1◦N, 4.6◦E). In this way, we can gather some clues on expected ionospheric effects on Galileo applications during the next solar activity maximum. [less ▲] Detailed reference viewed: 70 (23 ULg)Seasonal variations of storm-time TEC at European middle latitudes; ; Warnant, René in Advances in Space Research (2010), 46(10), 1318-1325 Detailed reference viewed: 20 (3 ULg)SIDC TelescienceWarnant, René ; Bidaine, Benoît ; et alReport (2010) Detailed reference viewed: 31 (7 ULg)On the TEC short-term forecast with corrections based on the average ionospheric response to background and storm-time geomagnetic conditions; Warnant, René ; in Geophysical Research Abstracts (2009, April), 11(Abs. No EGU2009-13283), Detailed reference viewed: 13 (0 ULg)Local electron density reconstruction from simultaneous ground-based GNSS and ionosonde measurements; Warnant, René ; in Geophysical Research Abstracts (2009, April), 11(Abs. No EGU2009-10956), Detailed reference viewed: 13 (1 ULg)Trans-ionospheric GPS signal delay gradients observed over mid-latitude Europe during the geomagnetic storms of October-November 2003; Warnant, René ; in Advances in Space Research (2009), 43(9), 1314-1324 Detailed reference viewed: 13 (1 ULg)Ionospheric slab thickness - Analysis, modelling and monitoring; Warnant, René in Advances in Space Research (2009), 44(10), 1295-1303 Detailed reference viewed: 20 (1 ULg)Local ionospheric activity – nowcast and forecast services; Warnant, René ; et alConference (2009) Detailed reference viewed: 12 (0 ULg)Development of products for GNSS users at the Belgian Solar-Terrestrial Centre of ExcellenceWarnant, René ; ; et alConference (2008, December) Detailed reference viewed: 108 (22 ULg) Galileo Local Component for the detection of atmospheric threatsWarnant, René ; Wautelet, Gilles ; et alConference (2008, November) Detailed reference viewed: 18 (6 ULg)
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