Patent ID: 7949038

Claim:
A method for the acquisition and tracking of Binary Offset Carrier (BOC) (n,n) modulated codes, particularly for satellite positioning/navigation systems, comprising the steps of: acquiring at a receiver terminal a Binary Offset Carrier (BOC)(n,n) modulated pseudo-random noise code, from a remote transmitter; generating a local replica of said pseudo-random noise code at the receiver terminal; and calculating a correlation function of the Binary Offset Carrier (BOC)(n,n) modulated code received with a code w a locally generated according to the relationship w a (τ)= c (τ n )− a·[prn (τ n +T c /2)− prn (τ n −T c /2)] wherein c(τ) is a local replica of said Binary Offset Carrier (BOC) modulated pseudo-random noise code with delay τ n , PRN(τ) is a replica of said unmodulated pseudo-random noise code, and a is a predetermined non-zero weight coefficient, said correlation function being at the base of an acquisition test function, whereby a code acquisition is recognized for a value of said test function being higher than a predetermined threshold.