Internet platform for improving the EGNOS ionospheric corrections

Abstract

The problem of insufficient accuracy of the EGNOS corrections for the Eastern Poland, located near the border of the EGNOS service area, is well known. The EEI PECS project (EGNOS EUPOS Integration) assumed improving the EGNOS corrections by using the GPS observations from Polish ASG-EUPOS stations. One of important component of the EGNOS correction is ionospheric delay of incoming GNSS signal. In the presented research work, new ionospheric corrections were computed using selected stations located at the eastern and central part of Poland. The new corrections, substituting the original ones for selected grid nodes into original EGNOS corrections in real time, were transmitted by the SiSNet (Signal In Space through Internet) technology to the receivers. The use of regional parameters for the improvement of ionospheric model increased the accuracy and stability of the navigation position, determined during the experiments carried out at Biala Podlaska Airport—located near east border of Poland.