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- Optimization of GNSS Data Archival and Exchange using TileDBPublication . Arribas, Duarte Nuno de Brito; Fernandes, Rui Manuel da Silva; Crocker, Paul AndrewThe growing volume of GNSS data presents significant challenges in its storage, processing, and interoperability, particularly due to the inefficiencies of the RINEX format, which, while widely used, struggles to handle large datasets and is not optimized for cloud environments. This dissertation explores the potential of array-based databases, particularly TileDB, as a modern solution to optimize GNSS data management. A central contribution of this work is the development of two applications: raw2rin and tiledb_manager, which facilitate the conversion of files of proprietary GNSS receiver formats to RINEX and TileDB formats, supporting bidirectional translation between the latter, parameter adjustment, metadata corrections, and efficient data storage and querying. The dissertation also includes an evaluation of TileDB’s performance, focusing on the effects of different data granularities and fragmentation. The tests conducted point to a worse read performance for both higher data retrieved, and higher fragment numbers.