4655 20210125102934.0 https://doi.org/10.1007/978-3-030-10475-7_137-1 DOI BKSECT-2020-0001 Bruyninx, C. GPS, Data Acquisition and Analysis 2020 NO Legrand, J. Aerts, W. carine.bruyninx@observatoire.be BOOKSECT