A GPS receiver acquires carrier frequency and Gold code phase using short segments of a received GPS signal. In one embodiment, a 1-ms segment of the GPS signal is transformed to the frequency domain. This is multiplied by a frequency representation of the Gold code. The resulting product is converted...http://www.google.com/patents/US7505508?utm_source=gb-gplus-sharePatent US7505508 - System and method for fast code phase and carrier frequency acquisition in GPS receiver
