Development of GNSS Observation Achievement Supervision System

   Aiming at the supervision work of massive GNSS observations product data, this paper designed and implemented a set of GNSS observation achievement supervision system with automatic data checking, quality assessment, supervision report generation and statistical analysis of quality elements; The system development platform, database, model checking, quality grade, supervision report and statistical analysis were briefly descripted, and the key technologies used in the system were also introduced.Through application of the system in the work, the use of methods and process of the system were elaborated and the conclusion was finally come that the system can greatly improve work efficiency of GNSS observation achievement supervision and the objectivity of quality assessment.