  In this proceedings, we study the possible gravitational impact of primordial
black holes (PBHs) or dark matter (DM) clumps on GNSS satellite orbits and
gravimeter measurements. It provides a preliminary step to the future
exhaustive statistical analysis over 28 years of gravimeter and GNSS data to
get constraints over the density of asteroid-mass PBH and DM clumps inside the
solar system. Such constraints would be the first to be obtained by direct
observation on a terrestrial scale.
