A GNSS receiver, in general, is an electronic device that receives and digitally processes the signals from a GNSS satellite constellation in order to provide position, velocity and time (of the receiver).
GNSS receivers have been traditionally implemented in hardware: a hardware GNSS receiver is conceived as a dedicated chip that have been designed and built (from the very beginning) with the only purpose of being a GNSS receiver.
Global Navigation System Satellites (GNSS) require the use of a precision time signal to determine location of the user. These same signals can also be used to synchronize phase and frequency for ground based systems. With multiple constellations now in orbit, time redundancy is achieved by receivers that are configured for concurrent constellation reception. GNSS signals are used to synchronize telecommunication networks, financial networks, and ground based SATCOM terminals