8-12 July 2013
Africa/Johannesburg timezone
Home > Timetable > Session details > Contribution details
PDF | XML | iCal

Evaluation of the NeQuick model in Southern mid-latitudes using South African co-located GPS and Ionosonde stations data

Presented by Mr. Sylvain Malan AHOUA on 10 Jul 2013 from 17:40 to 18:40
Type: Poster Presentation
Session: Poster2
Track: Track D2 - Space Science


This work investigates the performance of the NeQuick model in southern mid-latitudes. The NeQuick is used among others for the European Geostationary Navigation Overlay Service (EGNOS), developed to supplement the GNSSs systems by reporting on the reliability and accuracy of the positioning data. It is used by recommendation of the ITU-R, to compute the estimated TEC presumed along the ray path of the signal from satellite to the GNSS receiver. The performance of the NeQuick is evaluated after it is adapted to the local conditions by ingesting the Fof2 and M(3000)F2 recorded by the means of Ionosonde at Hermanus (34.40S; 19.20E, South Africa). It is then used to compute a theoretical TEC above Hermanus and compared to the observed TEC derived from co-located GPS receiver which belongs to the TrigNet network. The TEC is directly extracted from the data stocked by the Gopi GPS-TEC software. To evaluate the model under different geomagnetic contexts we select three days each of quiet and disturbed magnetically according to different solar activity indicators. The results will be useful to advise users of GNSS equipment.






Dr CILLIERS Pierre email: pjcilliers@sansa.org.za South African National Space Agency



Primary authors