Modeling Errors and Corrections: EGNOS Context and Architecture

This lecture covers the modeling of errors and corrections in the context of the European Geostationary Navigation Overlay Service (EGNOS). Topics include the architecture of EGNOS, augmentation systems, satellite tracking, and the distribution of altitude differences. The instructor explains the process of estimating errors, applying corrections, and calculating precise positions using EGNOS. The lecture also delves into the transmission of corrections, ionospheric and tropospheric errors, and the factors affecting horizontal positioning accuracy. Additionally, it discusses the global augmentation system developed for improved navigation. Various correction parameters and techniques are explored, such as slow corrections, clock synchronization, and the use of VHF for error estimates.