The erroneous GPS signal
Less uncertainties, more accuracy
This study can’t directly correct the inaccuracies of each device, so its aim is to warn GPS users of the occurrence and the amplitude of the ionospheric irregularities, as well as their impact on high precision positioning. It is now possible to measure and quantify this variability although it is still difficult to predict. Nevertheless, future research should be directed at a better understanding of the physical phenomena behind these irregularities, allowing a better forecast to be established. Gilles Wautelet is confident: “the next objective is to adapt current methodology, which is well defined at 30-second intervals, to data at 1-second intervals. Therefore, we will have 30 times more data, allowing us to obtain a far more precise range of irregularities, especially with regard to low and high latitudes, where ionospheric variations are extremely high and very fast”.