Patent ID: 8731110

Claim:
A method of operating a Global Positioning System (GPS) receiver comprising an RF section and a digital section, the digital section comprising correlator circuitry for performing correlation with respect to a plurality of satellite channels, the method comprising: cycling power to the RF and digital sections on and off according to a determined duty cycle having an ON portion and an OFF portion; during the ON portion, sampling data received from the plurality of satellite channels; and resetting a state of at least a portion of the correlator circuitry in correspondence to a transition from the OFF portion to the ON portion, wherein resetting the state of at least a portion of the correlator circuitry comprises: determining a state of the portion of the correlator circuitry that would have been expected at a point in time following the OFF portion; and resetting the state of the portion of the correlator circuitry to a state based on the state that would have been expected.