Tropospheric delay modelling for the EGNOS augmentation system
Kamil Kaźmierski , Marcelo Santos , Jarosław Bosy
AbstractTropospheric delay is one of the deleterious factors limiting the accuracy of the precise Global Navigation Satellite Systems positioning. The value of delay depends on the path through which a signal has to follow in the subsurface layers of the atmosphere. Tropospheric delay models are developed to overcome this limitation. Among them one can find UNB, TropGrid or IGGtrop models. In this paper, we adjusted the UNB3m model to the actual meteorological parameters from Europe. A new model was called UNBe.eu covering the EGNOS augmentation system area. The use of meteorological observations helped us to decrease the bias for more than 70% of reference radio sounding locations. Still, 30% of reference sites depicted a lack of any improvements of the ZTD estimation with regard to the newly established model. Therefore, this study puts forward a need for a deeper investigation of the discussed issue.
|Journal series||Survey Review, ISSN 0039-6265, (A 15 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||Zenith tropospheric delay, Tropospheric delay modelling, EGNOS, UNB models, GNSS|
|ASJC Classification||; ;|
|Internal identifier||63850; PX-59c8b6c1d5de156e7ccf2880|
|Score||= 15.0, 17-08-2020, ArticleFromJournal|
|Publication indicators||= 0; = 1; : 2016 = 0.935; : 2017 = 1.163 (2) - 2017=1.071 (5)|
|Citation count*||6 (2020-09-28)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.