SINO & UNICORE GNSS Receiver Observation, Broadcast Ephemeris & PPP-B2b Dataset (for B2bPPP& Rtklib Playback)

This dataset was collected on the rooftop of Building 1 at the Innovation Academy for Precision Measurement Science and Technology (APM), CAS, in Wuhan, China. The GNSS receiver models used were SINO K803W and UNICORE UM980, with an assumed antenna type of CNT AT360. The dataset is provided as a single ZIP archive. Upon extraction, the data is organized into two main directories based on receiver model: sino (corresponding to SINO K803W) unicore (corresponding to UNICORE UM980) Within each receiver directory, data is further subdivided into directories named by Year and Day Of Year (YYYYDOY) format, e.g., 2025080 represents the 80th day of the year 2025. Each daily directory contains the following three primary types of data files (along with their corresponding .tag timestamp/index files): Bas_YYYYMMDDHHMM.log: Contains broadcast ephemeris information (used for the simulated base station/server side in B2bPPP playback). Rov_YYYYMMDDHHMM.log: Contains raw GNSS observation data from the rover. Cor_YYYYMMDDHHMM.log: Contains the PPP-B2b correction stream data. This dataset covers the time period from Day of Year 080, 2025 (March 21, 2025) to Day of Year 082, 2025 (March 23, 2025).