ABSTRACT
Limitation of satellite systems’ operating use is caused by different errors that inevitably accompany these systems’ operation. The satellite system, in all its complexity, can be regarded as a complex measurement system. Operational accuracy of such a system is one of its most important characteristics. Therefore, as soon as during the design stage, it is important to minimize the error related to the measurement accuracy. Errors of this type are specified as systematic and in the case of the satellite systems, they apply to the receiver clock, and their elimination is possible by increasing the number of measured distances from the satellites by one. Passing of the radio waves through the medium may change their speed and frequency. On the way from the satellite to the receiver’s antenna, the signal passes through the atmosphere, whose properties change dynamically in a stochastic way. Two atmosphere layers have the greatest impact on the signal propagation – ionosphere and troposphere. The article presents basics researches on the evaluation of the influence of atmospheric conditions on the quality of satellite signal using fuzzy sets.
