A novel acquisition technique for Navstar GPS

In order to obtain a navigation solution using the Navstar Global Positioning System (GPS), a receiver must acquire and track the transmissions from numerous Navstar satellites. In the current generation of Navstar receivers either multiple tracking and acquisition circuits, or a single multiplexed circuit, are employed to perform this task. A class of binary code sequence is described which has a high correlation with up to four of the Navstar Gold code sequences. Theoretical derivation of the generation of this sequence is given, as well as, the cross-correlation properties of the code. In addition, results from an experimental tracking receiver are included