G05 GNSS++: Emerging Technologies and Applications

IAG (Geodesy)

25-Jun-2015, 15:00 - 16:30

Abstract content:

Application of high-resolution regional ionosphere model to processing of national reference networks using Bernese GNSS Software

Routine processing of GNSS data from the national continuously operating reference network is required for a number of applications, including reference frame maintenance, geodynamic studies, estimation of atmospheric parameters, etc. The processed baselines in such networks are usually of several tens of km, rarely exceeding 100 km. For the ambiguity resolution direct L1/L2 observations or their linear combinations, like wide-line, are used. These observables are sensitive to the adverse influence of the ionosphere. Hence, ionosphere models are often used to support the processing of the national reference networks.

In this study a high-resolution regional ionosphere model is developed and applied to processing of the GNSS data from the selected subnetwork of the EUPOS system. In particular, resulting ambiguity resolution success, coordinate repeatability, and tropospheric ZTD estimates are analyzed. The processing is carried out in Bernese GNSS Software 5.2 using modified GPSEST module that allows importing IONEX files. The results are compared to those obtained with the application of global and regional CODE models. This comparison shows that the application of the regional ionosphere model can successfully be used to support processing of the national reference networks.
P. Wielgosz1, J. Kaplon2, A. Krypiak-Gregorczyk1, K. Sosnica2, T. Hadas2.
1University of Warmia and Mazury in Olsztyn, Institute of Geodesy, Olsztyn, Poland.
2University of Environmental and Life Sciences, Institute of Geodesy and Geoinformatics, Wroclaw, Poland.


GNSS     EUPOS     ionosphere     Bernese