The speed of light is one of the most fundamental constants in physics, yet it has never been directly measured in one direction. Instead, scientists rely on assumptions built into how time and ...

A new carrier-phase-based method for satellite-ground time synchronization has ushered in a new era of precision, achieving picosecond-level accuracy that far surpasses traditional methods. This ...

With the advancement of Internet applications, the global demand for broadband satellite communication services is incessantly escalating. Furthermore, there exists an exponential surge in the ...