For the past fifty years, geodetic satellites have contributed to the measurement of numerous geophysical parameters. They thus enabled us to improve our knowledge on several Earth's physical parameters and behaviors, through their refined observation. In particular, the geocentric gravitational coefficient is a key contributor to Satellite Laser Ranging (SLR) validation of the stringent accuracy requirement on the radial positioning of altimeter satellites, defining sea level relative to the Earth’s center of mass. Indeed, SLR...