engleski

Position-time correlation of Saastamoinen tropospheric delay correction of Galileo satellite navigation signals along x, y, and z axes: The partial analysis

The paper presents the results of research on the success of the application of the Saastamoinen model of tropospheric correction in the Galileo radionavigation system. The atmospheric layer of the troposphere affects the propagation of the radionavigation signal causing a decrease in velocity and a deviation from the ideal geometric trajectory. These phenomena are commonly described by the term tropospheric delay. The atmospheric causes of tropospheric delay are hydrostatic and non-hydrostatic elements of the atmosphere, including atmospheric dry gases and water vapour in all its forms. A number of tropospheric models have been developed that determine the value of tropospheric error and correct tropospheric delay. The results presented in this paper are based on the study of the absolute deviation of the accuracy of the user position with respect to the value of tropospheric correction generated by the Saastamoinen model and its impact on the positioning accuracy.

Galileo radionavigation system ; mapping function ; Saastamoinen model ; tropospheric delay ; total zenith delay

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