System and method for deriving the position of a receiver from signals broadcast by satellites.

摘要

A GPS receiver (10) comprises a phase-error derivation circuit (161 which derives the average phase-error over a predetermined period. The phase-error derivation circuit sends an average phase difference signal to a numerically controlled oscillator (18) to control its clqck rate. Deriving the average phase error over the predetermined period makes it possible to derive the phase error between the Gold code sequence from the satellite and the Gold code sequence derived by the local Gold code generator precisely.