SIGNAL ACQUISITION METHOD AND APPARATUS OF GNSS RECEIVER

摘要

PURPOSE: A signal acquisition method and an apparatus of an GNSS receiver are provided to rapidly obtain a GPS signal by using FFT. CONSTITUTION: An acquiring method of a global positioning system comprises the following steps: storing a PRN code (S1010); controlling an input signal (S1020); performing FFT(S1030); performing IFFT (S1040); and searching a maximum value(S1050). In the PRN code storing step, the PRN code is processed by FFT and a result is stored. In controlling an input signal, the speed of the input signal is controlled.