The First Multi-Constellation SBAS Trial: GPS/GLONASS Multi-Constellation - (PPT)

摘要

Combined use of GPS and GLONASS with SBAS: – Multi-constellation SBAS, capable of augmenting both GPS and GLONASS, and additionally QZSS, is implemented and tested successfully; – Potential problems and solutions on realizing a multi-constellation SBAS based on the current standard were investigated; – It is confirmed that the performance of SBAS-aided navigation is certainly improved by adding GLONASS, especially when satellite visibility is limited; – Adding GLONASS also reduces protection levels and thus improves availability of navigation. Ongoing and future works: – Realtime operation test broadcasting augmentation information for both GPS and GLONASS on QZSS L1-SAIF augmentation channel; – Use GLONASS observables in generation of ionospheric correction; – Mixed use of different types of receiver for reference stations with consideration of receiver-dependent bias errors; – Further extension to support Galileo.