The ongoing research project has a goal to pin-point those massively used location based services for positioning which might be degraded due to increased solar activities, and, to explain how strong this impact may be. This paper will outline the emerging concept of warning system by introducing its inputs, possible outputs aligned to service classes and the evaluation of threat during the last period since the year 2000.
This paper describes the usage of GNSS technology for monitoring ionospheric disturbances due to Solar activities. The main direction is to show how avoiding the ionospheric factors may affect the accuracy and precision of GNSS position determination. Presented are the advantages and disadvantages of modelling ionospheric refraction. Data from the observations from the previous solar cycle are shown in situations where sudden Solar irregularities can cause several-meter positioning deviation for single frequency code observations processing.
The article considers practical navigation and orientation with a simple satellite receiver and a digital topographic map. The methods of positioning, their errors, and position augmentation systems are described. The detailed treatment of the practical use of receivers, topographic and navigation maps is given along with a comparison between the classic and the satellite navigation strategy. From outdoor experience, the general overview of the receiver setup is shown, followed by the manipulations in the course of navigation with the use of a map and, finally, by the post-navigation analysis.