The overall measurement error is represented as a random process in time, with the error structurally split into three groups due to three different sources, according to the paper. The first group includes time variable errors caused by tropospheric-ionospheric influences, the second group includes time variable errors caused by quasi-stationary refraction blocks, and the third group includes completely random mistakes caused by random process noise. According to the research, these two sets of time-dependent errors define the accuracy of GPS measurements, i.e. they are two major components of GPS measurement variances.
Author(S) Details
G. Perovic
Department of Geodesy and Geoinformatics, Faculty of Civil Engineering, University of Belgrade, Serbia.
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