![]() ![]() GPS Solut 17(1):63–73īilitza D, Reinisch BW (2008) International reference ionosphere 2007: improvements and new parameters. Adv Space Res 47(2):312–322īidaine B, Lonchay M, Warnant R (2013) Galileo single frequency ionospheric correction: performances in terms of position. Adv Space Res 45(9):1122–1128īidaine B, Warnant R (2011) Ionosphere modelling for Galileo single frequency users: illustration of the combination of the NeQuick model and GNSS data ingestion. The broadcast NeQuick model can provide accurate ionospheric error corrections when Galileo begins full operational capability.īidaine B, Warnant R (2010) Assessment of the NeQuick model at mid-latitudes using GNSS TEC and ionosonde data. Galileo broadcast NeQuick model outperforms Klobuchar by 15.6 and 17.5 % over the continental and oceanic regions, respectively, for the test period. ![]() In oceanic regions, the three models can correct for 51.1, 61.2 and 68.6 % of the ionospheric delay. The evaluation results show that in continental regions, GPS broadcast Klobuchar and the original and broadcast NeQuick can mitigate the ionospheric delay by 56.8, 63.3 and 72.4 %, respectively. In oceanic regions, where the IGS stations are sparse, high-quality vertical TEC sources provided by JASON-1&2 altimeters are used as references. In continental regions, ionospheric TEC derived from 34 IGS stations is used as references for comparison. The accuracy of the three ionospheric models is evaluated over both the continental and oceanic regions for the year 2013. ![]() The broadcast coefficients of Galileo NeQuick model are computed from 23 globally distributed tracking stations of the International GNSS Service (IGS), by ingesting the Global Positioning System (GPS)-derived ionospheric total electron content (TEC) into the original NeQuick2 model. We evaluate the performance of Galileo broadcast NeQuick model by comparing it with GPS broadcast Klobuchar and the original NeQuick2 models. ![]()
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