Estimation of second-order refractive effects in models of the ionosphere for GPS-applications

NNBO "Metrology" of the State Standard of Ukraine
NNBO "Metrology" of the State Standard of Ukraine

The refractive error caused by straggling of trajectories is analyzed, as well as the contribution of the refractive lengthening of radio path to the changing of pseudorange in GPS measurements is estimated. Calculations for various frequencies and zenith angles for code variant of the two-frequency method are presented. The spherically-stratified model of ionosphere was used.

1. Krynsk, J, Zanimonskiy Y, Wielgosz P. Potentiality of GPS as a Tool for Short Term Geodynamics, Presented at the XXVI General Assembly of European Geophysical Society 2001, Nice, France, 24 - 31 March 2001. 
2. Prokopov A.B., Remaev E.B. Refrakcionnye ogranichenija tochnosti dvuhvolnovoj sputnikovoj lazernoj dal'nometrii // Ukr. metrol. zhurnal. - 2000. - Vyt. 2. - S. 5 - 9. 
3. Kravcov Ju.A., Fejzulin Z.I., Vinogradov A.G. Prohozhdenie radiovoln cherez atmosferu Zemli. - M.: Radio i svjaz', - 1983. - 224 s.