Integrity events analysis at OLEG GNSS station in EGNOS data collection network

The paper presents a decision support system required for proper functioning of the EGNOS Data Collection Network. The system is designed to detect unusual events such as, for example, integrity errors, whose occurence implies necessity of the thorough human analysis in search for their direct cause. This goal is achieved by gathering data in the GPS SQL database, such as the one installed at OLEG multiconstellation station located at Silesian University of Technology in Gliwice, Poland. Presented decision support system is useful for tuning of the whole EGNOS Data Collection Network and, in particular, it can support decisions about modification of the software installed in the base stations in order to achieve more accurate reporting of the EGNOS operation in the future.