Invited by State Key Laboratory of Geodesy and Earth`s Dynamics (SKLGED), Professor Gao Yang from University of Calgary in Canada visited Institute of Geodesy and Geophysics (IGG) and gave an academic report “GNSS Biases” on May 26.

The report introduced the importance of understanding the generation mechanism of GNSS biases from four aspects: why we need to deal with GNSS biases, the research status, evaluation method and calibration method of GNSS biases.

After the report, professor Gao Yang also had a deep discussion with the audience at the end of the report.