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ISSN Печать: 0040-2508
ISSN Онлайн: 1943-6009
Indexed in
SIMULATION OF THE MAPPING FUNCTION FOR CALCULATION OF TROPOSHERIC ZENITH DELAY
Краткое описание
Currently, global positioning satellite systems (GPS) are widely used in various spheres of activity related to the precise determining of the users' location. The positioning errors are significantly affected by the delay in the signal propagation channel from the satellite to the user. Consideration of the above errors is attempted to be performed by creation of tropospheric zenith delay simulations and functions of their mapping. In this paper the model of mapping function for tropospheric delays is suggested. It takes into account the seasonal and latitudinal variability, as well as the refractive properties of the troposphere. The suggested mapping function provides a rather good description of the tropospheric delay at high and low elevation angles of the satellites allowing increasing accuracy of positioning of users of global navigation systems. A comparison of the suggested model with the mostly widespread known ones as well as with the experimentally obtained data is performed. The derived results can be used for creation of global navigation system receivers and for diagnostics of atmospheric processes with their help.
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