Precise Point Positioning (PPP) is widely used for high-accuracy navigation, but broadcast ephemeris from the BDS-3 system still suffers from hourly ...

On Earth, knowing the time feels simple. Your phone pings the same second as a GPS satellite and an atomic clock in a lab.

eosimutils is a Python package providing a core set of utilities for space mission simulation. It is designed to support reference frame management, state and time handling, kinematic transformations, ...